[docs] fix broken links in changelog

[skip CI]

Author: jcb91

CHANGELOG.md

@@ -29,91 +29,91 @@ Repo-level stuff:
 
  - Require newer version of
    [`jupyter_nbextensions_configurator`](https://github.com/jupyter-contrib/jupyter_nbextensions_configurator)
-   [#1197](https://github.com/ipython-contrib/pull/1197)
+   [#1197](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1197)
    [@jcb91](https://github.com/jcb91)
  - Remove version-pinning from lxml dependency
-   [#1174](https://github.com/ipython-contrib/pull/1174)
+   [#1174](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1174)
    [@codypiersall](https://github.com/codypiersall)
  - Use `requirejs` vs. `require`, to align with notebook usage
-   [#1165](https://github.com/ipython-contrib/pull/1165)
+   [#1165](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1165)
    [@gnestor](https://github.com/gnestor)
  - `tests` specify exceptions (new flake8 moan)
-   [#1143](https://github.com/ipython-contrib/pull/1143)
+   [#1143](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1143)
    [@jcb91](https://github.com/jcb91)
  - move `js_highlight.py` into nbconvert_support, specify exception type
-   [#1140](https://github.com/ipython-contrib/pull/1140)
+   [#1140](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1140)
    [@jcb91](https://github.com/jcb91)
  - docs updates
-   [#1200](https://github.com/ipython-contrib/pull/1200),
-   [#1201](https://github.com/ipython-contrib/pull/1201)
+   [#1200](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1200),
+   [#1201](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1201)
    [@jcb91](https://github.com/jcb91)
 
 New features and bugfixes:
 
  - `livemdpreview` __new nbextension added!__
-   [#1155](https://github.com/ipython-contrib/pull/1155)
+   [#1155](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1155)
    [@jcb91](https://github.com/jcb91)
  - `nbTranslate`
    * Typos + readability improvements
-     [#1191](https://github.com/ipython-contrib/pull/1191)
+     [#1191](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1191)
      [@adyavanapalli](https://github.com/adyavanapalli),
    * Fix typo and revise text for better readability
-     [#1190](https://github.com/ipython-contrib/pull/1190)
+     [#1190](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1190)
      [@adyavanapalli](https://github.com/adyavanapalli),
    * use traitlets > 4.1 tag API
-     [#1138](https://github.com/ipython-contrib/pull/1138)
+     [#1138](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1138)
      [@jcb91](https://github.com/jcb91)
  - `collapsible_headings`
    * indent heading collapse controls by level
-     [#1183](https://github.com/ipython-contrib/pull/1183)
+     [#1183](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1183)
      [@jcb91](https://github.com/jcb91)
    * patch TextCell.set_text to catch more changes
-     [#1184](https://github.com/ipython-contrib/pull/1184)
+     [#1184](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1184)
      [@jcb91](https://github.com/jcb91)
    * link complete font-awesome css from cdn, not just some fontfaces
-     [#1179](https://github.com/ipython-contrib/pull/1179)
+     [#1179](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1179)
      [@jcb91](https://github.com/jcb91)
  - `toc2`
    * Add a 'download as HTML with toc' for Jupyter >= 5.1
-     [#1182](https://github.com/ipython-contrib/pull/1182)
+     [#1182](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1182)
      [@jfbercher](https://github.com/jfbercher)
    * only set notebook dirty if metadata item changed
-     [#1178](https://github.com/ipython-contrib/pull/1178)
+     [#1178](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1178)
      [@jcb91](https://github.com/jcb91)
    * Bugfix undefined title_sidebar
-     [#1175](https://github.com/ipython-contrib/pull/1175)
+     [#1175](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1175)
      [@jfbercher](https://github.com/jfbercher)
    * move config into toc2.js
-     [#1167](https://github.com/ipython-contrib/pull/1167)
+     [#1167](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1167)
      [@jcb91](https://github.com/jcb91)
    * configurable titles; dialog-alterable metadata settings
-     [#1124](https://github.com/ipython-contrib/pull/1124)
+     [#1124](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1124)
      [@jcb91](https://github.com/jcb91)
    * remove deprecated st var from template
-     [#1199](https://github.com/ipython-contrib/pull/1199)
+     [#1199](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1199)
      [@jcb91](https://github.com/jcb91)
    * [toc2] link complete font-awesome css from cdn
-     [#1198](https://github.com/ipython-contrib/pull/1198)
+     [#1198](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1198)
      [@jcb91](https://github.com/jcb91)
  - `scroll_down` fix notebook `5.x` compatibility
-   [#1181](https://github.com/ipython-contrib/pull/1181)
+   [#1181](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1181)
    [@jcb91](https://github.com/jcb91)
  - `exercise,exercise2` use bootstrap hidden class
    rather than jquery show/hide, in order to play nicely with collapsible_headings.
    fixes [#990](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/990)
-   [#1169](https://github.com/ipython-contrib/pull/1169)
+   [#1169](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1169)
    [@jcb91](https://github.com/jcb91)
  - `runtools` don't alter selection when running cells
-   [#1145](https://github.com/ipython-contrib/pull/1145)
+   [#1145](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1145)
    [@jcb91](https://github.com/jcb91)
  - `ExecuteTime` add preprocessor to execute notebook updating timing metadata
-   [#1139](https://github.com/ipython-contrib/pull/1139)
+   [#1139](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1139)
    [@jcb91](https://github.com/jcb91)
  - `snippets` Updated README
-   [#1150](https://github.com/ipython-contrib/pull/1150)
+   [#1150](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1150)
    [@chuaxr](https://github.com/chuaxr)
  - `code_prettify` Update `code_prettify.yaml`
-   [#1162](https://github.com/ipython-contrib/pull/1162)
+   [#1162](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1162)
    [@fehiepsi](https://github.com/fehiepsi)
 
 
@@ -186,7 +186,7 @@ New features and bugfixes:
   * [#1084](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1084)
     [@jfbercher](https://github.com/jfbercher)
     fix for
-    [#1083](https://github.com/ipython-contrib/issue/1083):
+    [#1083](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/1083):
     Revert full url in links to relative to the current page.
   * [#1091](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1091)
     [@fkoessel](https://github.com/fkoessel)
@@ -261,7 +261,7 @@ New features and bugfixes:
   [#1066](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1066)
   [@jfbercher](https://github.com/jfbercher)
   tentative fix for
-  [#1065](https://github.com/ipython-contrib/issues/1065)
+  [#1065](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/1065)
   by updating jqueryui cdn and version
 - for various nbextensions
   [#1061](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1061)