Fix the quoting of some symbols in the changelog

Author: bbatsov

CHANGELOG.md

@@ -45,8 +45,8 @@
 * [#1561](https://github.com/clojure-emacs/cider/issues/1561): Use an appropriate font-lock-face for variables, macros and functions in
 the ns-browser.
 * [#1708](https://github.com/clojure-emacs/cider/issues/1708): Fix `cider-popup-buffer-display` when another frame is used for the error buffer.
-* [#1733](https://github.com/clojure-emacs/cider/pull/1733): Better error handling when no boot command is found in exec-path.
-* Fix orphaned nrepl-messages buffer after `cider-quit'.
+* [#1733](https://github.com/clojure-emacs/cider/pull/1733): Better error handling when no boot command is found in `exec-path`.
+* Fix orphaned nrepl-messages buffer after `cider-quit`.
 
 ## 0.12.0 (2016-04-16)