remote: fix documentation and indent

include/git2/remote.h

@@ -358,6 +358,8 @@ typedef struct {
 } git_push_update;
 
 /**
+ * Callback used to inform of upcoming updates.
+ *
  * @param updates an array containing the updates which will be sent
  * as commands to the destination.
  * @param len number of elements in `updates`