fix reviewer formatting in LLMs.txt generation (#433)

Author: evantahler

.github/workflows/llmstxt.yml

@@ -50,9 +50,9 @@ jobs:
           branch: auto-update-llms-txt
           delete-branch: true
           title: '🤖 Regenerate LLMs.txt'
-          reviewers: 
-            - evantahler
-            - torresmateo
+          reviewers: >
+            evantahler
+            torresmateo
 
       - name: Enable Pull Request Automerge
         run: gh pr merge --squash --auto ${{ steps.cpr.outputs.pull-request-number }}