docs: Restore fine-grained PAT instructions, now that fine-grained PATs are supported again (#935)

Reverts
github-community-projects/continuous-ai-for-accessibility-scanner#831

Fixes
github/continuous-ai-for-accessibility#51
(Hubber access only)

Author: smockle

README.md

@@ -66,13 +66,18 @@ The a11y scanner requires two Personal Access Tokens (PATs) as repository secret
 - `metadata: read`
 - Scope: [`github-community-projects/continuous-ai-for-accessibility-scanner`](https://github.com/github-community-projects/continuous-ai-for-accessibility-scanner)
 
-#### The `GH_TOKEN` is a classic PAT with
+#### The `GH_TOKEN` is a fine-grained PAT with
 
-- `repo` scope
+- `actions: write`
+- `contents: write`
+- `issues: write`
+- `pull-requests: write`
+- `metadata: read`
+- Scope: Your target repository (where issues and PRs will be created)
 
-> 👉 Neither GitHub Actions' default `GITHUB_TOKEN` nor a fine-grained PAT can be used here.
+> 👉 GitHub Actions' default `GITHUB_TOKEN` cannot be used here.
 
-📚 [Creating a fine-grained PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-fine-grained-personal-access-token) | [Creating a classic PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-personal-access-token-classic) | [Creating repository secrets](https://docs.github.com/en/actions/how-tos/write-workflows/choose-what-workflows-do/use-secrets#creating-secrets-for-a-repository)
+📚 [Creating a fine-grained PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-fine-grained-personal-access-token) | [Creating repository secrets](https://docs.github.com/en/actions/how-tos/write-workflows/choose-what-workflows-do/use-secrets#creating-secrets-for-a-repository)
 
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@@ -113,4 +118,4 @@ Beta participants have direct contact for questions and suggestions. A public fe
 
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-*Last updated: 2025-09-23*
+*Last updated: 2025-09-25*