Fix "\" in path

Author: danielinux

.github/workflows/build-keytools-windows.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Build Solution
       shell: cmd
       run: |
-        MSBuild.exe tools/keytools/wolfBootKeyTools.sln /p:Configuration=Release /p:Platform="x64"
+        MSBuild.exe tools\keytools\wolfBootKeyTools.sln /p:Configuration=Release /p:Platform="x64"
 
     # Step 3: Upload executables as artifacts
     - name: Upload EXE Artifacts