patch 8.2.3685: Visual studio project files are not recognized

Problem:    Visual studio project files are not recognized.
Solution:   Use the xml file type. (Doug Kearns)
diff --git a/src/version.c b/src/version.c
index 35afaed..5483fe6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3685,
+/**/
     3684,
 /**/
     3683,