fix path in "regenerate-dialects.yml"

Author: mofeing

.github/workflows/regenerate-dialects.yml

@@ -29,7 +29,7 @@ jobs:
         shell: julia --color=yes {0}
         run: |
           using JuliaFormatter
-          format("./src/Dialects/")
+          format("./src/mlir/Dialects/")
       - name: Create Pull Request
         id: cpr
         uses: peter-evans/create-pull-request@v6