Add cmake/ to the path for consistency with the rest of the docs.
Merge topic 'cmake-packages-manual' into next

1c2d980 Add cmake/ to the path for consistency with the rest of the docs.
Help: Add a CMake manual for Packages related docs.
Merge topic 'cmake-packages-manual' into next

3fe4ac8 Help: Add a CMake manual for Packages related docs.