patch 8.1.1281: cannot specify a count with :chistory

Problem:    Cannot specify a count with :chistory.
Solution:   Add a count to :chistory and :lhistory. (Yegappan Lakshmanan,
            closes #4344)
diff --git a/src/version.c b/src/version.c
index 0ba9dd1..f137b83 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1281,
+/**/
     1280,
 /**/
     1279,