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

[Arseniy Zaostrovnykh 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.
----------------
necto wrote:

Here is how it looks like:
![2025-04-23T09:13:50,035090911+02:00](https://github.com/user-attachments/assets/3e096ff3-6dbe-4848-8b1c-b79de555275e)

And when clicked:
![2025-04-23T09:14:08,105023675+02:00](https://github.com/user-attachments/assets/dd1a1b97-7282-4430-93fd-c65ec815d8b0)

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