Merge pull request rails#44675 from ghousemohamed/fix-rdoc-highlight-…

…in-active-support-key-generator

Fixed rdoc typo highlighting for ActiveSupport::KeyGenerator class [ci-skip]

activesupport/lib/active_support/key_generator.rb

@@ -33,17 +33,17 @@ def initialize(secret, options = {})
       @hash_digest_class = options[:hash_digest_class] || self.class.hash_digest_class
     end
 
-    # Returns a derived key suitable for use.  The default key_size is chosen
+    # Returns a derived key suitable for use.  The default +key_size+ is chosen
     # to be compatible with the default settings of ActiveSupport::MessageVerifier.
-    # i.e. OpenSSL::Digest::SHA1#block_length
+    # i.e. <tt>OpenSSL::Digest::SHA1#block_length</tt>
     def generate_key(salt, key_size = 64)
       OpenSSL::PKCS5.pbkdf2_hmac(@secret, salt, @iterations, key_size, @hash_digest_class.new)
     end
   end
 
   # CachingKeyGenerator is a wrapper around KeyGenerator which allows users to avoid
-  # re-executing the key generation process when it's called using the same salt and
-  # key_size.
+  # re-executing the key generation process when it's called using the same +salt+ and
+  # +key_size+.
   class CachingKeyGenerator
     def initialize(key_generator)
       @key_generator = key_generator