Fix inaccurate code comment.

lib/geocoder.rb

@@ -120,7 +120,7 @@ module Geocoder
   # Does the given value look like an IP address?
   #
   # Does not check for actual validity, just the appearance of four
-  # dot-delimited 8-bit numbers.
+  # dot-delimited numbers.
   #
   def ip_address?(value)
     !!value.to_s.match(/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/)