documentation(920508):Resolved conflict issue

ej2-react/code-snippet/grid/excel-export-merge/index.css

@@ -0,0 +1,9 @@
+.e-grid .custom {
+  background-color: #f48fb1 !important;/* csslint allow: important */
+  color: white;
+}
+
+.e-grid .custom {
+  background-color: #fce4ec;
+  color: white;
+}

ej2-react/grid/filtering/filter-menu.md

@@ -302,7 +302,7 @@ function App() {
 }
 ;
 export default App;
-
+{% endraw %}
 {% endhighlight %}
 {% highlight js tabtitle="datasource.jsx" %}
 {% include code-snippet/grid/filter-method/app/datasource.jsx %}