fix: Use withBase method for app images on documentation

packages/docs/pages/apps/github/actions.md

@@ -1,8 +1,8 @@
 ---
+favicon: /favicons/github.svg
 items:
   - name: Create issue
     desc: Creates a new issue.
-    avatar: /favicons/github.svg
 ---
 
 <script setup>

packages/docs/pages/apps/github/triggers.md

@@ -1,17 +1,14 @@
 ---
+favicon: /favicons/github.svg
 items:
   - name: New issues
     desc: Triggers when a new issue is created
-    avatar: /favicons/github.svg
   - name: New pull requests
     desc: Triggers when a new pull request is created
-    avatar: /favicons/github.svg
   - name: New stargazers
     desc: Triggers when a user stars a repository
-    avatar: /favicons/github.svg
   - name: New watchers
     desc: Triggers when a user watches a repository
-    avatar: /favicons/github.svg
 ---
 
 <script setup>