Fix include for catch2 3.1 and above
In Catch2 3.1 and above there are some header files being installed to include/catch2/matchers/ instead of include/catch2/. This PR fixes compilation and I have tested it with Catch2 3.4.
In Catch2 3.1 and above there are some header files being installed to include/catch2/matchers/ instead of include/catch2/. This PR fixes compilation and I have tested it with Catch2 3.4.