fix: read file with node fs and not @actions/core

Author: rnmeow

README.md

@@ -29,8 +29,9 @@ jobs:
       GIST_ID: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
     steps:
     - name: Download
-      uses: BlockG-ws/quote-box@master # 尚未發布到 Marketplace
-      quotes: './quotes.json'
+      uses: BlockG-ws/quote-box-gist@master # 尚未發布到 Marketplace
+      with:
+        quotes: ./quotes.json # 可選
     - name: Push
       uses: exuanbo/actions-deploy-gist@v1.1.4
       with: