Update llvm.yml

Author: masx200

.github/workflows/llvm.yml

@@ -22,7 +22,7 @@ jobs:
                   /usr/local/opt/llvm
  
                   /usr/local/Cellar/llvm/
-                    key: ${{ runner.os }}-llvm-16        
+                 key: ${{ runner.os }}-llvm-16        
             - uses: actions/cache@v3
               with:
                   path: |