fixed trailing whitespace

public/app/core/services/context_srv.ts

@@ -64,7 +64,7 @@ export class ContextSrv {
   hasAccessToExplore() {
     return (this.isEditor || config.viewersCanEdit) && config.exploreEnabled;
   }
-  
+
   getTheme(): ThemeName {
     return this.user.lightTheme ? ThemeNames.Light : ThemeNames.Dark;
   }