add content permission to github pages (#49)

## Description
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## Motivation and Context
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## Screenshots (if appropriate):
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## Types of changes
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- [ ] Edits to existing documentation
- [ ] Changing documentation structure (relocating existing files,
ensure redirects exist)
- [ ] Stylistic changes (provide screenshots above)

.github/workflows/deploy.yml

@@ -13,7 +13,7 @@ on:
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
 permissions:
-  contents: read
+  contents: write
   pages: write
   id-token: write