GitLab

Fixes:
|... /build/DerivedSources/WebCore/XPathGrammar.cpp:120:10: fatal error: XPathGrammar.hpp: No such file or directory
|   120 | #include "XPathGrammar.hpp"
|       |          ^~~~~~~~~~~~~~~~~~
| ...
| .../build/DerivedSources/WebCore/CSSGrammar.cpp:160:10: fatal error: CSSGrammar.hpp: No such file or directory
|   160 | #include "CSSGrammar.hpp"
|       |          ^~~~~~~~~~~~~~~~
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>