fix(amazonq): minor text update (#7420)

## Problem

Minor text update

## Solution


---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Co-authored-by: David Hasani <davhasan@amazon.com>

Author: dhasani23

packages/core/src/amazonq/webview/ui/tabs/constants.ts

@@ -63,7 +63,8 @@ To learn more, visit the [User Guide](${userGuideURL}).`,
     gumby: {
         title: 'Q - Code Transformation',
         placeholder: 'Open a new tab to chat with Q',
-        welcome: 'Welcome to Code Transformation!',
+        welcome:
+            'Welcome to Code Transformation! You can also run transformations from the command line. To install the tool, see the [documentation](https://docs.aws.amazon.com/amazonq/latest/qdeveloper-ug/run-CLI-transformations.html).',
     },
     review: {
         title: 'Q - Review',