message: [Docs] Differentiate between public and private API
  On the homepage we should have a clear distinction between the public
  and private C++ APIs.
diff: @@ -61,8 +61,9 @@ Resources
  API Documentation
  =================
  -* `C++ API Documentation <https://lldb.llvm.org/cpp_reference/index.html>`_
  -* `Python API Documentation <https://lldb.llvm.org/python_reference/index.html>`_
  +* `Public Python API Reference <https://lldb.llvm.org/python_reference/index.html>`_
  +* `Public C++ API Reference <https://lldb.llvm.org/cpp_reference/namespacelldb.html>`_
  +* `Private C++ Reference <https://lldb.llvm.org/cpp_reference/index.html>`_
  External Links
  ==============
  