[flang-commits] [clang] [flang] Fix more diagnostic wording for style; NFC (PR #93190)

[Aaron Ballman via flang-commits]

AaronBallman wrote:

All of the issues were found using some new tooling I've not yet put up for review. The changes were largely mechanical (uppercase->lowercase, remove trailing punctuation), but there were some surgical fixes to grammar, punctuation, etc. Also, if the diagnostic was not emitted anywhere, it was removed entirely.

https://github.com/llvm/llvm-project/pull/93190