[clang] [clang-tools-extra] [clang] Make 'fileScopeAsmDecl' matcher public (PR #165319)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> I also was surprised, the script for `clang/docs/LibASTMatchersReference.html` is called [dump_ast_matchers.py](https://github.com/llvm/llvm-project/blob/main/clang/docs/tools/dump_ast_matchers.py). Probably was not run for some time..

Yeah, it was.. NGL under my radar.



https://github.com/llvm/llvm-project/pull/165319