Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine tests/dbapi20.py, tests/test_MySQLdb_dbapi20.py and observe cannnot, however expect to see cannot.
• Examine tests/dbapi20.py and observe heirarchy, however expect to see hierarchy.
• Examine tests/dbapi20.py and observe propogates, however expect to see propagates.
• Examine tests/dbapi20.py and observe portible, however expect to see portable.
• Examine MySQLdb/cursors.py and observe peformed, however expect to see performed.
• Examine doc/user_guide.rst and observe parmeters, however expect to see parameters.
• Examine doc/user_guide.rst and observe distinquish, however expect to see distinguish.
• Examine pymemcompat.h and observe desciption, however expect to see description.
• Examine tests/dbapi20.py and observe compiliance, however expect to see compliance.
• Examine doc/user_guide.rst and observe applicatons, however expect to see applications.
• Examine _mysql.c and observe apear, however expect to see appear.

Notes

Semi-automated issue generated by
https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md

To avoid wasting CI processing resources a branch with the fix has been
prepared but a pull request has not yet been created. A pull request fixing
the issue can be prepared from the link below, feel free to create it or
request @timgates42 create the PR. Alternatively if the fix is undesired please
close the issue with a small comment about the reasoning.

https://github.com/timgates42/MySQLdb1/pull/new/bugfix_typos

Thanks.