Fix minor typo.
diff --git a/git-flow-release b/git-flow-release
index bc7795c..255c08b 100644
--- a/git-flow-release
+++ b/git-flow-release
@@ -151,7 +151,7 @@
 
 require_not_being_in_release_branch() {
 	if [ "$BRANCH" = "$(git_current_branch)"]; then
-		die "You cannot be in the '$BRANCH' branch when you finnish it."
+		die "You cannot be in the '$BRANCH' branch when you finish it."
 	fi
 }