docs - anchor links (#848)

* docs - add links

* add desc.

docs/source/conf.py

@@ -359,4 +359,15 @@ autodoc_default_options = {
     'private-members': True,
 }
 
+# Sphinx will add “permalinks” for each heading and description environment as paragraph signs that
+#  become visible when the mouse hovers over them.
+# This value determines the text for the permalink; it defaults to "¶". Set it to None or the empty
+#  string to disable permalinks.
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-html_add_permalinks
 html_add_permalinks = True
+
+# True to prefix each section label with the name of the document it is in, followed by a colon.
+#  For example, index:Introduction for a section called Introduction that appears in document index.rst.
+#  Useful for avoiding ambiguity when the same section heading appears in different documents.
+# http://www.sphinx-doc.org/en/master/usage/extensions/autosectionlabel.html
+autosectionlabel_prefix_document = True