patch 8.0.1438: filetype detection test not updated for change

Problem:    Filetype detection test not updated for change.
Solution:   Update the test.
diff --git a/src/version.c b/src/version.c
index 39abe1f..f66cf45 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1438,
+/**/
     1437,
 /**/
     1436,