[clang-doc] Clang-Doc not picking up comments for methods in html output

[PeterChou1]

Even in the basic e2e test we can see that it doesn't pick up the comments for the source

see:
https://github.com/llvm/llvm-project/blob/main/clang-tools-extra/test/clang-doc/Inputs/basic-project/include/Calculator.h
https://github.com/llvm/llvm-project/blob/main/clang-tools-extra/test/clang-doc/basic-project.test

I suspect its something wrong with the HTML Generator