minor fixes index.md

index.md

@@ -14,9 +14,9 @@ First, fork and clone this practice repository.
 
 Add a remote to the upstream repository:
 ```bash
-$ cd advanced-practice
+$ cd basic-practice-pages
 $ git remote add upstream ssh://git@gitlab.lcsb.uni.lu:8022/R3/school/git/basic-practice-pages.git
-$ git fetch
+$ git fetch upstream
 ```
 
 Then, create a separate branch from the develop branch: