patch 8.2.3805: i3config files are not recognized

Problem:    i3config files are not recognized.
Solution:   Add patterns to match i3config files. (Quentin Hibon,
            closes #7969)

src/version.c

@@ -749,6 +749,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3805,
 /**/
     3804,
 /**/