docs: add missing retrigger steps

[Phil91]

Description

Added description for missing retrigger steps and their urls

Why

To have the retrigger steps fully documented

Issue

Refs: eclipse-tractusx/portal-backend#912

Backend PR

Refs: eclipse-tractusx/portal-backend#915

Checklist

• I have followed the contributing guidelines
• I have performed IP checks for added or updated 3rd party libraries
• I have created and linked IP issues or requested their creation by a committer
• I have added copyright and license headers, footers (for .md files) or files (for images)
• I have performed a self-review of my own code
• I have successfully tested my changes locally
• I have added tests that prove my changes work
• I have checked that new and existing tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas

[Phil91]

@evegufy we should merge the pr #383 first, since this branch is based on that.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[MaximilianHauer]

@Phil91 can be merged