patch 8.1.1431: popup window listed as "Scratch"

Problem:    Popup window listed as "Scratch".
Solution:   List them as "Popup".
diff --git a/src/version.c b/src/version.c
index 2f05cea..9b20fb7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1431,
+/**/
     1430,
 /**/
     1429,