patch 9.1.0389: filetype: templ files are not recognized

Problem:  filetype: templ files are not recognized
Solution: Detect '*.templ' files as filetype templ
          (Tristan Knight)

See:
- https://github.com/a-h/templ
- https://templ.guide/

closes: #14697

Signed-off-by: tris203 <admin@snappeh.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    389,
 /**/
     388,
 /**/