updating the query editor's syntax highlighting mode to sqlserver

public/app/core/components/code_editor/code_editor.ts

@@ -36,6 +36,8 @@ import 'brace/mode/text';
 import 'brace/snippets/text';
 import 'brace/mode/sql';
 import 'brace/snippets/sql';
+import 'brace/mode/sqlserver';
+import 'brace/snippets/sqlserver';
 import 'brace/mode/markdown';
 import 'brace/snippets/markdown';
 

public/app/plugins/datasource/mssql/partials/query.editor.html

@@ -1,7 +1,7 @@
 <query-editor-row query-ctrl="ctrl" can-collapse="false">
 	<div class="gf-form-inline">
 		<div class="gf-form gf-form--grow">
-			<code-editor content="ctrl.target.rawSql" datasource="ctrl.datasource" on-change="ctrl.panelCtrl.refresh()" data-mode="sql">
+			<code-editor content="ctrl.target.rawSql" datasource="ctrl.datasource" on-change="ctrl.panelCtrl.refresh()" data-mode="sqlserver">
 			</code-editor>
 		</div>
 	</div>