spelling: github

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

.github/workflows/cmake.yml

@@ -32,7 +32,7 @@ jobs:
       working-directory: ${{runner.workspace}}/build
       # Note the current convention is to use the -S and -B options here to specify source
       # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
+      # The CMake binaries on the GitHub Actions machines are (as of this writing) 3.12
       run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
 
     - name: Build