General: Add description for AI Assistant

[ge94zec]

Checklist

General

• I tested all changes and their related features with all corresponding user types.
• Language: I followed the guidelines for inclusive, diversity-sensitive, and appreciative language.
• I chose a title conforming to the naming conventions for pull requests.

Client

• Important: I implemented the changes with a very good performance, prevented too many (unnecessary) REST calls and made sure the UI is responsive, even with large data (e.g. using paging).
• I strictly followed the principle of data economy for all client-server REST calls.
• I strictly followed the client coding and design guidelines.
• I added multiple screenshots/screencasts of my UI changes.

Motivation and Context

Fixes: #1734

Description

Adjusted AI text above Ai button.

Steps for Testing

Prerequisites:

1. Log in to TumApply as Professor
2. Verify in Job Creation Page

Review Progress

Code Review

• Code Review 1

Manual Tests

• Test 1

Screenshots

[github-actions]

📊 Client Test Coverage Too Low

🔍 View coverage locally:

npm run test:ci
open build/test-results/lcov-report/index.html

🌐 View coverage from GitHub:
Download the "coverage-report-client" artifact from this workflow run.