fix typo in the github content (#8980)

src/data/roadmaps/git-github/content/rebase@99FVJ3Zs8n6lr8L95mG6g.md

@@ -1,6 +1,6 @@
 # Rebase
 
-Rebasing in Git is a powerful and potentially complex feature used to reorganize or modify a series of commits. The primary purpose of rebasing is to create a cleaner, more linear project history by moving or combining changes from one branch onto another.
+Rebasing in Git is a powerful and potentially complex feature used to reorganize or modify a series of commits. The primary purpose of rebasing is to create a cleaner, more linear project history by moving or combining changes from one branch into another.
 
 Visit the following resources to learn more: