[clang-tools-extra] [clang-tidy] Avoid recommending links to non-free coding guidelines (PR #160745)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> We could also mention that we currently do not accept checks for MISRA/AUTOSAR due to legal/license reasons, and refer to the post on Discourse for more info.

But I guess we allow generic checks that "happen to be" Misra/autosar.
Like the recent `avoid-default-lambda-capture`. It's one of Misra guidelines but I didn't know that..



https://github.com/llvm/llvm-project/pull/160745