Fix 'run run' typo in the documentation

Signed-off-by: Martin Krauskopf <[email protected]>

Author: mkrauskopf

Diff for: Documentation/git-filter-repo.txt

@@ -1250,7 +1250,7 @@ directory structure looked like
          stuff.txt
       zebra.jpg
 
-then you would instead run run
+then you would instead run:
 
 --------------------------------------------------
 git filter-repo --to-subdirectory-filter my-module/