docs: minor addition to changelogs/v4.1.6.rst and upgrade_416.rst

Author: kenjis

user_guide_src/source/changelogs/v4.1.6.rst

@@ -65,3 +65,5 @@ And the following methods are deprecated:
 
 Bugs Fixed
 **********
+
+See the repo's `CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>`_ for a complete list of bugs fixed.

user_guide_src/source/installation/upgrade_416.rst

@@ -17,6 +17,8 @@ Due to a bug fix, the Validation now might change the validation results when yo
 Breaking Enhancements
 *********************
 
+n/a
+
 Project Files
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