fix: links to Cookbook Client

[shagn]

Topic and Scope

Adds the correct links to the Cookbook Client in the docs

Concerns/issues

Is the PR potentially cause any issues that might be of interest? Any other issues to be tought of?

Formal requirements

There are some formal requirements that should be satisfied. Please mark those by checking the corresponding box.

• I did check that the app can still be opened and does not throw any browser logs
• I created tests for newly added PHP code (check this if no PHP changes were made)
• I updated the OpenAPI specs and added an entry to the API changelog (check if API was not modified)
• I notified the matrix channel if I introduced an API change

[github-actions]

Test Results

   12 files    584 suites   1m 37s ⏱️
  575 tests   575 ✅ 0 💤 0 ❌
2 300 runs  2 299 ✅ 1 💤 0 ❌

Results for commit 5e69bb7.

♻️ This comment has been updated with latest results.