fix the format check CI

.github/workflows/evm.yml

@@ -1,7 +1,7 @@
-name: test evm
+name: test & check evm
 
 on:
-  push:
+  pull_request:
     paths:
       - "evm/**"
 
@@ -15,6 +15,9 @@ jobs:
 
     name: Foundry project
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: evm
     steps:
       - uses: actions/checkout@v3
         with:
@@ -27,20 +30,18 @@ jobs:
 
       - name: Run Forge build
         run: |
-          cd evm
           forge --version
           forge build --sizes
         id: build
 
       - name: Run Forge format check
         run:  |
-              forge --version
-              forge fmt --check
-        id:   format
+          forge --version
+          forge fmt --check
+        id: format
 
       - name: Run Forge tests
         run: |
-          cd evm
           forge test -vvv
         id: test
         env: