Fix starterkit giltab key link (#295)

* Fix starterkit giltab key link

* Correct link

The correct link has changed again

This commit fixes the link

* Fix link

Pasting in the online editor was too clever

---------

Co-authored-by: AndyLHCb <[email protected]>

Author: jonas-eschle

first-analysis-steps/lhcb-dev.md

@@ -53,7 +53,7 @@ up.
    ```
    and put in your information.
 
- - Next, visit [https://gitlab.cern.ch/profile/keys](https://gitlab.cern.ch/profile/keys)
+ - Next, visit [https://gitlab.cern.ch/-/user_settings/ssh_keys](https://gitlab.cern.ch/-/user_settings/ssh_keys)
    (logging in with your CERN credentials) and add an SSH key.
 
  - Finally, run this LHCb-specific configuration command: