updated for version 7.4.531

Problem:    Comments about parsing an Ex command are wrong.
Solution:   Correct the steop numbers.

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    531,
 /**/
     530,
 /**/