patch 8.0.0893: cannot get the scroll count of a terminal window

Problem:    Cannot get the scroll count of a terminal window.
Solution:   Add term_getscrolled().
diff --git a/src/version.c b/src/version.c
index 30d76f1..326f33b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    893,
+/**/
     892,
 /**/
     891,