typo from example, also dependabot

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/chatgpt-review.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     name: ChatGPT explain code
     steps:
-      - uses: cirolini/chatgpt-github-actions@v1.3
+      - uses: cirolini/chatgpt-github-actions@v1.4
         with:
           openai_api_key: ${{ secrets.OPENAI_KEY }}
           github_token: ${{ secrets.GITHUB_TOKEN }}
           github_pr_id: ${{ github.event.number }}
           openai_engine: "text-davinci-002"
-          mode: file
+          mode: files