nbtree: Correct inaccurate split location comment.
Minor oversight in commit
@@ -190,7 +190,7 @@ _bt_findsplitloc(Relation rel,
Assert(!BTreeTupleIsPosting(newitem));
/*
- * maxsplits should never exceed maxoff because there will be at most as
+ * nsplits should never exceed maxoff because there will be at most as
* many candidate split points as there are points _between_ tuples, once
* you imagine that the new item is already on the original page (the
* final number of splits may be slightly lower because not all points
