chore: update doc-pr workflow yml files

Author: CassiopeiaCode

.github/workflows/doc-pr-build.yml

@@ -14,3 +14,5 @@ jobs:
       commit_sha: ${{ github.event.pull_request.head.sha }}
       pr_number: ${{ github.event.number }}
       package: lighteval
+      languages: en zh
+

.github/workflows/doc-pr-upload.yml

@@ -11,6 +11,7 @@ jobs:
     uses: huggingface/doc-builder/.github/workflows/upload_pr_documentation.yml@main
     with:
       package_name: lighteval
+      languages: en zh
     secrets:
       hf_token: ${{ secrets.HF_DOC_BUILD_PUSH }}
       comment_bot_token: ${{ secrets.COMMENT_BOT_TOKEN }}