Tutorials (schueltke): repaired link

Description

• adapted link to Tutorial in box according to the others (not pointing to the video but to the top-page of the Tutorial section)

Related Issue(s)

N.A

Other Changes

N.A

Screenshots/Logs

Testing Instructions

1. Download this branch and open server
2. Test / Check both links to Tutorials

Developer Checklist

• Code has been tested locally and/or in pipeline.
• Merge conflicts resolved with the target branch.

Additional Notes

N.A

docs/index.md

@@ -41,7 +41,7 @@ Learn how to set it up & install the prerequisites.
 
 Design your first aircraft.
 
-[:octicons-arrow-right-24: Tutorials](tutorials/standalone.mp4)
+[:octicons-arrow-right-24: Tutorials](tutorials/changing-design-specifications.md)
 </div>
 
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