Various fixes in font_selection tests.

1. Fixed comment in header comment (/s/disabled/enabled).
 2. Remove pending step for #56081 bug.

Change-Id: I9b1a74aa4c0305f529123f24dc05f8c8e5d4f58d

tests/browser/features/step_definitions/font_selection_steps.rb

@@ -19,9 +19,7 @@ Given(/^I open ULS$/) do
 end
 
 Then(/^the active content font must be the same as font prior to the preview$/) do
-	pending("bug #56081") do
-		on(PanelPage).content_font.should == @original_content_font
-	end
+	on(PanelPage).content_font.should == @original_content_font
 end
 
 Then(/^the active interface font must be the same as font prior to the preview$/) do