fixed syntax

Author: hsbt

en/news/_posts/2015-12-11-ruby-2-3-0-preview2-released.md

@@ -31,7 +31,7 @@ The did_you_mean gem
 shows the candidates on the `NameError` and `NoMethodError` to ease
 debugging.
 
-[RubyVM::InstructionSequence#to_binary and .load_from_binary] (https://bugs.ruby-lang.org/issues/11788) are introduced as experimental feature. With these features, we can make a ISeq (bytecode) pre-compilation system.
+[RubyVM::InstructionSequence#to_binary and .load_from_binary](https://bugs.ruby-lang.org/issues/11788) are introduced as experimental feature. With these features, we can make a ISeq (bytecode) pre-compilation system.
 
 Ruby 2.3 includes many performance tuning fixes.
 For example, [optimize Proc#call] (https://bugs.ruby-lang.org/issues/11569),