Allow navigating messages by shorthands

[stdedos]

Current problem

In order to "quickly find" the correct pylint message, one needs to use some search (readthedocs, google), or manually search a (very long list)

Desired solution

Any of the following URLs:

• https://pylint.readthedocs.io/en/latest/user_guide/messages/C0114
• https://pylint.readthedocs.io/en/latest/user_guide/messages/c0114
• https://pylint.readthedocs.io/en/latest/user_guide/messages/missing-module-docstring

should lead to the correct page (as of writing, https://pylint.readthedocs.io/en/latest/user_guide/messages/convention/missing-module-docstring.html)

Additional context

No response