Fix the broken markdown hyperlink from the Migration Tool GitHub template. (aws#9995)

Author: aemous

.github/ISSUE_TEMPLATE/migration-tool.yml

@@ -1,10 +1,14 @@
 ---
 name: "AWS CLI v1-to-v2 Migration Tool Issue"
-description: Report an issue or get support with the AWS CLI v1-to-v2 Migration Tool. Please see our [documentation](https://github.com/aws/aws-cli/tree/v1v2-migration-tool?tab=readme-ov-file#usage).
+description: Report an issue or get support with the AWS CLI v1-to-v2 Migration Tool.
 title: "(short issue description)"
 labels: [v1-to-v2-migration-tool, needs-triage]
 assignees: []
 body:
+  - type: markdown
+    attributes:
+      value: |
+        Please see the [documentation](https://github.com/aws/aws-cli/tree/v1v2-migration-tool?tab=readme-ov-file#usage) before creating an issue.
   - type: textarea
     id: description
     attributes: