Update wording slightly

services/web/app/views/project/editor/feature-onboarding.pug

@@ -11,11 +11,10 @@ div(ng-controller="FeatureOnboardingController")
 		) ×
 		.feat-onboard-wrapper
 			h1.feat-onboard-title
+				| Introducing 
 				span.feat-onboard-highlight Commenting
 				|  & 
 				span.feat-onboard-highlight Track Changes
-			p.feat-onboard-description
-				| Collaboration features are here! 
 			p.feat-onboard-description
 				span.feat-onboard-highlight Commenting 
 				| and