patch 8.2.3603: fish filetype not recognized

Problem:    Fish filetype not recognized.
Solution:   Add a file pattern and match script line. (Doug Kearns)
diff --git a/src/version.c b/src/version.c
index 5d3d2a3..1c8c955 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3603,
+/**/
     3602,
 /**/
     3601,