docs: update description for add-work-item-from-branch input to clarify usage with check-pull-request

Author: joshjohanning

README.md

@@ -73,7 +73,7 @@ jobs:
 | `link-commits-to-pull-request`         | Only if `check-commits=true`, link the work items found in commits to the pull request                                                                                     | `false`  | `true`                |
 | `validate-work-item-exists`            | Validate that the work item(s) referenced in commits and PR exist in Azure DevOps (requires `azure-devops-token` and `azure-devops-organization`)                          | `false`  | `true`                |
 | `append-work-item-title`               | Append the work item title to `AB#xxx` references in the PR body (e.g. `AB#123` becomes `AB#123 - Fix bug`). Requires `azure-devops-token` and `azure-devops-organization` | `false`  | `false`               |
-| `add-work-item-from-branch`            | Automatically extract work item ID(s) from the head branch name and add `AB#xxx` to the PR body if not already present                                                     | `false`  | `false`               |
+| `add-work-item-from-branch`            | Automatically extract work item ID(s) from the head branch name and add `AB#xxx` to the PR body if not already present. Best used with `check-pull-request=true`           | `false`  | `false`               |
 | `azure-devops-organization`            | Only if `check-commits=true`, link the work items found in commits to the pull request                                                                                     | `false`  | `''`                  |
 | `azure-devops-token`                   | Only required if `link-commits-to-pull-request=true`, Azure DevOps PAT used to link work item to PR (needs to be a `full` PAT)                                             | `false`  | `''`                  |
 | `github-token`                         | The GitHub token that has contents-read and pull_request-write access                                                                                                      | `true`   | `${{ github.token }}` |

action.yml

@@ -49,7 +49,7 @@ inputs:
     required: false
     default: 'false'
   add-work-item-from-branch:
-    description: 'Automatically extract work item ID(s) from the head branch name and add AB#xxx to the PR body if not already present (e.g. branch task/12345/fix-bug adds AB#12345 to the PR body)'
+    description: 'Automatically extract work item ID(s) from the head branch name and add AB#xxx to the PR body if not already present (e.g. branch task/12345/fix-bug adds AB#12345 to the PR body). Best used with check-pull-request=true.'
     required: false
     default: 'false'