patch 8.2.2523: Svelte filetype not recognized

Problem:    Svelte filetype not recognized.
Solution:   Add a detection rule. (Brian Ryall, closes #7858)
diff --git a/src/version.c b/src/version.c
index 304a730..265cf31 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2523,
+/**/
     2522,
 /**/
     2521,