[NFC][libunbind] Fix Sphinx error during CMake invocation

An error has occurred when I build libunwind with -DLLVM_BUILD_DOCS=ON.

Reviewed By: #libunwind, compnerd

Differential Revision: https://reviews.llvm.org/D96107

GitOrigin-RevId: 77fecc07955f51db3f184ba10d3f5fcd1f3f152d
1 file changed
tree: 960f3614f1c3deca9ce872bc3fca7894b70a334d
  1. .clang-format
  2. CMakeLists.txt
  3. LICENSE.TXT
  4. cmake/
  5. docs/
  6. include/
  7. src/
  8. test/