[clang] [docs] Fix the use of word "dependent" and other typos in the C++ Modules Doc (PR #136719)

[Chuanqi Xu via cfe-commits]

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@@ -477,21 +476,21 @@ When the ``-fmodules-embed-all-files`` flag are enabled, Clang explicitly emits
 code into the BMI file, the contents of the BMI file contain a sufficiently verbose
 representation to reproduce the original source file.
 
-:sup:`1`` Input files: The source files which took part in the compilation of the BMI.
-For example:
+.. [1] Input files: The source files which took part in the compilation of the BMI.
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ChuanqiXu9 wrote:

I am not familiar with RST. Are you tested with this?

https://github.com/llvm/llvm-project/pull/136719