Update bonus.jade - remove extra comma

services/web/app/views/referal/bonus.jade

@@ -34,7 +34,7 @@ block content
 		.row
 			.span4.offset4.bonus-banner
 				.title
-					a(href='mailto:?subject=Online LaTeX editor you may like, &body=Hey, I have been using the online LaTeX editor ShareLaTeX recently and thought you might like to check it out. #{encodeURIComponent(buildReferalUrl("e"))}', title='Share by Email').email Email us to your friends
+					a(href='mailto:?subject=Online LaTeX editor you may like &body=Hey, I have been using the online LaTeX editor ShareLaTeX recently and thought you might like to check it out. #{encodeURIComponent(buildReferalUrl("e"))}', title='Share by Email').email Email us to your friends
 
 		.row
 			.span4.offset4.bonus-banner