DOC: Adding docstrings to functions #15580 
Addresses issue #15580 in the Pandas library
Adding docstrings with examples to 
using_copy_on_write() and 
using_nullable_dtypes() functions, pathway 

Files under C:\Users\XXXX\pandas\pandas\_config|__init__py
Please reach out with any questions or edits you think I should make.  I have made the requested changes and ready for the review process to continue.  No offense taken, I am using chatbot as a guide but not the only resource I am using to understand the functions. 
I'll resubmit later once I fully know the ins and outs of the functions if you don't mind. 