patch 9.0.1272: typo in pattern for filetype detection

Problem:    Typo in pattern for filetype detection.
Solution:   Fix the typo. (closes #11924)
diff --git a/src/version.c b/src/version.c
index 68c47a3..dc3fad5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1272,
+/**/
     1271,
 /**/
     1270,