Replaced bracket pair by spaces in snippet bef,aft for ruby

snippets/ruby.snippets

@@ -923,10 +923,10 @@ snippet cont
 		${2}
 	end
 snippet bef
-	before(:${1:each}) do
+	before :${1:each} do
 		${2}
 	end
 snippet aft
-	after(:${1:each}) do
+	after :${1:each} do
 		${2}
 	end