Fix various typos in source documentation (#11553)

* Fix various typos in source documentation

* Delete cmake/modules/Catch2/CatchAddTests.cmake

* Delete tests/example/example_tests_main.cpp

* Revert test_config.cpp

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Co-authored-by: Ian Bassi <ian.bassi@outlook.com>

src/OrcaSlicer_app_msvc.cpp

@@ -276,7 +276,7 @@ int wmain(int argc, wchar_t **argv)
         if (hInstance_OpenGL == nullptr) {
             printf("MESA OpenGL library was not loaded\n");
         } else
-            printf("MESA OpenGL library was loaded sucessfully\n");
+            printf("MESA OpenGL library was loaded successfully\n");
     }
 #endif /* SLIC3R_GUI */