[ruby/json] Remove trailing spaces [ci skip]

ruby/json@2d2e0d403d

Author: nobu

ext/json/lib/json/add/string.rb

@@ -5,15 +5,15 @@
 
 class String
   # call-seq: json_create(o)
-  # 
+  #
   # Raw Strings are JSON Objects (the raw bytes are stored in an array for the
   # key "raw"). The Ruby String can be created by this class method.
   def self.json_create(object)
     object["raw"].pack("C*")
   end
 
   # call-seq: to_json_raw_object()
-  # 
+  #
   # This method creates a raw object hash, that can be nested into
   # other data structures and will be generated as a raw string. This
   # method should be used, if you want to convert raw strings to JSON
@@ -26,7 +26,7 @@ def to_json_raw_object
   end
 
   # call-seq: to_json_raw(*args)
-  # 
+  #
   # This method creates a JSON text from the result of a call to
   # to_json_raw_object of this String.
   def to_json_raw(...)