patch 8.2.1488: text does not scroll when inserting above first line

Problem:    Text does not scroll when inserting above first line.
Solution:   Adjust off-by-one error. (Ken Takata, closes #6739)
diff --git a/src/version.c b/src/version.c
index 51b87ce..d6d1973 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1488,
+/**/
     1487,
 /**/
     1486,