patch 8.2.3731: "set! termcap" shows codes in one column, but not keys

Problem:    "set! termcap" shows codes in one column, but not keys.
Solution:   Also use one column for keys. (closes #9258)
diff --git a/src/version.c b/src/version.c
index d0057b3..5c822be 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3731,
+/**/
     3730,
 /**/
     3729,