(cmake) Folders starting by a number highlighted incorrectly #4170

Describe the issue
Folders starting by a number are highlighted incorrectly in CMake.

Exemple:

Notice how the 3 at the beginning of 3rdparty is highlighted differently.

Which language seems to have the issue?

cmake

Are you using highlight or highlightAuto?

Ayu highlighting through mdbook... I don't know sorry.

Sample Code to Reproduce

project(my_app)

# example of folder structure
add_subdirectory(3rdparty/libremidi)

add_executable(my_app src/main.cpp)

target_link_libraries(my_app PRIVATE libremidi)

Expected behavior
File names in CMake function calls are highlighted normally.