patch 8.1.0705: :colorscheme isn't tested enough

Problem:    :colorscheme isn't tested enough
Solution:   Improve test coverage of :colorscheme. (Dominique Pelle, closes
            #3777)  Remove unnecessary sleep.
diff --git a/src/version.c b/src/version.c
index 95f3859..e772d05 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    705,
+/**/
     704,
 /**/
     703,