array.c: decoration

* array.c (rb_ary_plus): inline decoration of the operator.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

array.c

@@ -3530,12 +3530,11 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
  *  is the same as
  *     x = x + y
  *  This means that it produces a new array. As a consequence,
- *  repeated use of += on arrays can be quite inefficient.
+ *  repeated use of <code>+=</code> on arrays can be quite inefficient.
  *
  *  See also Array#concat.
  */
 
-
 VALUE
 rb_ary_plus(VALUE x, VALUE y)
 {