Add redirects for old doc pages

Signed-off-by: Ayan Sinha Mahapatra <[email protected]>

Author: AyanSinhaMahapatra

docs/source/conf.py

@@ -21,16 +21,25 @@
 copyright = "nexB Inc. and others."
 author = "AboutCode.org authors and contributors"
 
-
 # -- General configuration ---------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
     "sphinx.ext.intersphinx",
+    "sphinx_reredirects",
 ]
 
+
+# Redirects for olds pages
+# See https://documatt.gitlab.io/sphinx-reredirects/usage.html
+redirects = {
+    "explanations/index.html": "../reference/index.html",
+    "explanations/overview.html": "../reference/overview.html",
+    "explanations/license-detection-reference.html": "../reference/license-detection-reference.html"
+}
+
 # This points to aboutcode.readthedocs.io
 # In case of "undefined label" ERRORS check docs on intersphinx to troubleshoot
 # Link was created at commit - https://github.com/nexB/aboutcode/commit/faea9fcf3248f8f198844fe34d43833224ac4a83