fixed lint

Author: CJ

src/guides/v2.3/ui_comp_guide/concepts/ui_comp_uiregistry.md

@@ -37,7 +37,7 @@ To get a list of all components used on the current page, you can use this code:
 require('uiRegistry').get(function(component){console.log(component.name)});
 ```
 
-### Asynchronous way of retrieving UI components from the registry 
+### Asynchronous way of retrieving UI components from the registry
 
 {:.bs-callout-info}
 This way is **Recommended** for the good performance.