[clang] Docs: ambiguous use of "explicitly" in [[clang::no_specializaiton]] (PR #143839)

[Michael Davis via cfe-commits]

mdavis36 wrote:

Thank you all for weighing in here. It seems there is some disagreement on how to move forward with this. I believe the current change addresses the initial issue this PR is tied to, which aimed to clarify this attribute affects more than just explicit specializations defined by users.

I'm happy to make a change here to be more verbose like what @frederick-vs-ja suggested if that is what is preferred by the maintainers.

https://github.com/llvm/llvm-project/pull/143839