Merge branch 'ci/testing-env' of https://github.com/Zeroto521/pyjanitor into ci/testing-env

Author: Zeroto521

tests/test_documentation_build.py

@@ -4,6 +4,7 @@
 
 try:
     import mkdocs
+
     # Even if 'mkdocs' is installed
     # 'mkdocs' is could be imported as <module 'mkdocs' (namespace)>
     # Need to check if 'mkdocs' has '__version__' attribute