Fix path bug + update README (#28)

Author: ksew1

README.md

@@ -13,8 +13,8 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: foundry-rs/setup-snfoundry@v3
+      - uses: actions/checkout@v4
+      - uses: foundry-rs/setup-snfoundry@v4
       - run: snforge
 ```
 

action.yml

@@ -24,4 +24,4 @@ runs:
 
     - name: Set up Starknet Foundry
       shell: bash
-      run: node dist/index.js
+      run: node $GITHUB_ACTION_PATH/dist/index.js