cmake: Fix obs-frontend-apiConfig.cmake included from 3rd party plugin

UI/obs-frontend-api/cmake/obs-frontend-apiConfig.cmake.in

@@ -2,7 +2,7 @@
 
 include(CMakeFindDependencyMacro)
 
-find_dependency(OBS::libobs REQUIRED)
+find_dependency(libobs REQUIRED)
 
 include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
 check_required_components("@PROJECT_NAME@")