Modules: Resolve many Rubocop violations

modules/browser/detect_simple_adblock/module.rb

@@ -3,12 +3,10 @@
 # Browser Exploitation Framework (BeEF) - http://beefproject.com
 # See the file 'doc/COPYING' for copying permission
 #
-class Detect_simple_adblock< BeEF::Core::Command
-
-	def post_execute 
-		content = {}
-		content['simple_adblock'] = @datastore['simple_adblock'] if not @datastore['simple_adblock'].nil?
-		save content
-	end
-
+class Detect_simple_adblock < BeEF::Core::Command
+  def post_execute
+    content = {}
+    content['simple_adblock'] = @datastore['simple_adblock'] unless @datastore['simple_adblock'].nil?
+    save content
+  end
 end