patch 8.2.0686: formatoptions not sufficiently tested

Problem:    Formatoptions not sufficiently tested.
Solution:   Add a few more tests. (Yegappan Lakshmanan, closes #6031)
diff --git a/src/version.c b/src/version.c
index 105df76..d35cbab 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    686,
+/**/
     685,
 /**/
     684,