Add changes to changelog.

Author: javiromero

CHANGELOG.rst

@@ -36,12 +36,14 @@
   Thanks `@bagerard`_ for reporting (`#1503`_). Thanks to `@davehunt`_ and
   `@tomviner`_ for PR.
 
-* Renamed the pytest ``pdb`` module (plugin) into ``debugging``. 
+* Renamed the pytest ``pdb`` module (plugin) into ``debugging``.
 
 * Improve of the test output for logical expression with brackets.
   Fixes(`#925`_). Thanks `@DRMacIver`_ for reporting. Thanks to `@RedBeardCode`_
   for PR.
 
+* Updated docstrings with a more uniform style.
+
 *
 
 * ImportErrors in plugins now are a fatal error instead of issuing a