documentation: Update Readme.md

Readme.md

@@ -31,7 +31,8 @@ MicroCART has 3 areas of development:
 ## Documentation
 [How to demo the quadcopter](documentation/how_to_demo.md)  
 [How to charge the LiPo batteries](documentation/how_to_charge_lipo.md)  
-[Continuous Integration (automatic build process) FAQ](documentation/ci_faq.md)
+[Continuous Integration (automatic build process) FAQ](documentation/ci_faq.md)  
+[How to document things on Gitlab](documentation/how_to_document_things_on_gitlab.md)  
 
 # Stable Releases
 To browse stable releases from previous teams, view the [Tags](/../tags).
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