Update development.md

development.md

@@ -96,11 +96,11 @@ requiring any intervention on the development side for the newest Harpy version
 
 ## The Harpy repository
 ### repo structure
-Harpy exists as a Git repository and has 5 standard branches that are used in 
+Harpy exists as a Git repository and has 3 standard branches that are used in 
 specific ways during development. Git is a popular version control system and 
 discussing its use is out of the scope of this documentation, however there is no 
 shortage of [great resources](https://www.youtube.com/watch?v=8Dd7KRpKeaE) to get 
-you started. The 5 standard branches in the Harpy repository are outlined in the 
+you started. The 3 standard branches in the Harpy repository are outlined in the 
 table below:
 
 {.compact}