Message 383171 - Python tracker

I created https://github.com/python/cpython/pull/23802 with a port of the "wrong backtick detector" (at least, one aspect from it) from suspicious to rstlint.

I dropped the suspicious check three weeks ago, and found a single committed issue since then, which was fixable (and is fixed) in rstlint, so I'll continue this experience and see where it goes.