Fix command-block workflow

Author: hustcer

.github/workflows/command-block.yml

@@ -19,10 +19,10 @@ jobs:
       - uses: actions/[email protected]
         with:
           script: |
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
+            github.rest.pulls.createComment({
               owner: context.repo.owner,
               repo: context.repo.repo,
+              pull_number: context.issue.number,
               body: 'Awesome that you are trying to improve the documentation of a nushell command!\n\n' +
                 'As we autogenerate these command pages from the help information defined with the command after each release:\n'+
                 '- If you already updated the command help, you are already done!\n'+