patch 9.1.0942: a few typos were found

Problem:  a few typos were found
Solution: fix them (zeertzjq)

closes: #16232

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/insexpand.c b/src/insexpand.c
index 700ed54..fd82b36 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -916,9 +916,9 @@
 }
 
 /*
- *  Checks if the column is within the currently inserted completion text
- *  column range. If it is, it returns a special highlight attribute.
- *  -1 mean normal item.
+ * Checks if the column is within the currently inserted completion text
+ * column range. If it is, it returns a special highlight attribute.
+ * -1 mean normal item.
  */
     int
 ins_compl_col_range_attr(int col)