Doc: Fix languages for syntax highlighting


This adds "cmake" as a recognized code language for this module in the
QDoc configuration.

Change-Id: I8d6717641fe8ece84f26253914302c219a2552df
Reviewed-by: Alexei Cazacov <alexei.cazacov@qt.io>
commitaefe7a9e501af84786bc0404763262273c142d99
parent75240b264fca20f38d38c2353638a7c41cc5d109
authorDavid Boddie <david.boddie@qt.io>
committerDavid Boddie <david.boddie@qt.io>
commit timeWed, 21 Oct 2026 09:05:25 +0000