fix unwanted SQL highlight on non SQL template string

Author: Amoki

js-sql.sublime-syntax

@@ -462,7 +462,7 @@ contexts:
         - include: string-content
 
   literal-string-template:
-    - match: '(SQL)?(`)'
+    - match: '(SQL)(`)'
       captures:
         1: variable.function.tagged-template.js
         2: punctuation.definition.string.template.begin.js