docs(changelog): add namespace error fix entry

Added a changelog entry for the namespace name error of the Python
project documentation generator.

docs/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [Unreleased]
+
+### Fixed
+
+- Internal namespace name error which occured when generating Python documentation with `.` as the project directory
+
 ## [0.2.0] - 2026-09-28
 
 ### Added