patch 8.1.0498: /etc/gitconfig not recognized at a gitconfig file

Problem:    /etc/gitconfig not recognized at a gitconfig file.
Solution:   Add pattern to filetype detection. (closes #3568)
diff --git a/src/version.c b/src/version.c
index c3f2e23..c867ecf 100644
--- a/src/version.c
+++ b/src/version.c
@@ -793,6 +793,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    498,
+/**/
     497,
 /**/
     496,