Merge pull request #14394 from zoltankiss/fix_typo

Minor grammer, code conventions fix [ci skip]

activesupport/lib/active_support/core_ext/hash/conversions.rb

@@ -105,7 +105,7 @@ class << self
     #   hash = Hash.from_xml(xml)
     #   # => {"hash"=>{"foo"=>1, "bar"=>2}}
     #
-    # DisallowedType is raised if the XML contains attributes with <tt>type="yaml"</tt> or
+    # +DisallowedType+ is raised if the XML contains attributes with <tt>type="yaml"</tt> or
     # <tt>type="symbol"</tt>. Use <tt>Hash.from_trusted_xml</tt> to parse this XML.
     def from_xml(xml, disallowed_types = nil)
       ActiveSupport::XMLConverter.new(xml, disallowed_types).to_h
@@ -241,4 +241,3 @@ def process_array(value)
 
   end
 end
-