change twitter handle

lib/common/common_helper.rb

@@ -187,7 +187,7 @@ def banner
   puts '        WordPress Security Scanner by the WPScan Team '
   puts "                       Version #{WPSCAN_VERSION}"
   puts '          Sponsored by Sucuri - https://sucuri.net'
-  puts '      @_WPScan_, @ethicalhack3r, @erwan_lr, @_FireFart_'
+  puts '      @_WPScan_, @ethicalhack3r, @erwan_lr, @f1refart'
   puts '_______________________________________________________________'
   puts
 end
@@ -329,4 +329,4 @@ end
 # Check to see if we need a "s"
 def grammar_s(size)
   size.to_i >= 2 ? "s" : ""
-end
+end