patch 8.2.2277: missing backslash

Problem:    Missing backslash.
Solution:   Add backslash.
diff --git a/src/version.c b/src/version.c
index b344129..7d720f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2277,
+/**/
     2276,
 /**/
     2275,