patch 8.0.1703: in the tutor 'showcmd' is not set

Problem:    In the tutor 'showcmd' is not set.
Solution:   Set 'showcmd' in the vimtutor script. (Ken Takata, closes #2792)
diff --git a/src/version.c b/src/version.c
index 035f68c..fdaa1dc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1703,
+/**/
     1702,
 /**/
     1701,