Changed a translatation sentence

Fenix Su · Fenix Su · commit 746a2ea8fc11 · 2015-09-30T13:12:41.000-07:00
The original translation is improper. It is more like the translation of the
following sentence:

"It is fairly trivival to build a classic inheritance model, but not so trivival
to build a JavaScript prototype inheritance model."

My translation would be an improvement.
diff --git a/doc/zh/object/prototype.md b/doc/zh/object/prototype.md
@@ -3,7 +3,7 @@
 JavaScript &#19981;&#21253;&#21547;&#20256;&#32479;&#30340;&#31867;&#32487;&#25215;&#27169;&#22411;&#65292;&#32780;&#26159;&#20351;&#29992; *prototype* &#21407;&#22411;&#27169;&#22411;&#12290;
 
 &#34429;&#28982;&#36825;&#32463;&#24120;&#34987;&#24403;&#20316;&#26159; JavaScript &#30340;&#32570;&#28857;&#34987;&#25552;&#21450;&#65292;&#20854;&#23454;&#22522;&#20110;&#21407;&#22411;&#30340;&#32487;&#25215;&#27169;&#22411;&#27604;&#20256;&#32479;&#30340;&#31867;&#32487;&#25215;&#36824;&#35201;&#24378;&#22823;&#12290;
-&#23454;&#29616;&#20256;&#32479;&#30340;&#31867;&#32487;&#25215;&#27169;&#22411;&#26159;&#24456;&#31616;&#21333;&#65292;&#20294;&#26159;&#23454;&#29616; JavaScript &#20013;&#30340;&#21407;&#22411;&#32487;&#25215;&#21017;&#35201;&#22256;&#38590;&#30340;&#22810;&#12290;
+&#20363;&#22914;&#65292;&#24456;&#23481;&#26131;&#36890;&#36807;&#21407;&#22411;&#32487;&#25215;&#23454;&#29616;&#20256;&#32479;&#30340;&#31867;&#32487;&#25215;&#27169;&#22411;&#65292;&#20294;&#26159;&#21453;&#36807;&#26469;&#65292;&#36890;&#36807;&#20256;&#32479;&#30340;&#31867;&#32487;&#25215;&#27169;&#22411;&#26469;&#23454;&#29616;&#21407;&#22411;&#32487;&#25215;&#27169;&#22411;&#23601;&#22256;&#38590;&#24471;&#22810;&#12290;
 (It is for example fairly trivial to build a classic model on top of it, while the
 other way around is a far more difficult task.)
 

-Original file line number
+Diff line change
 JavaScript 不包含传统的类继承模型，而是使用 *prototype* 原型模型。
 虽然这经常被当作是 JavaScript 的缺点被提及，其实基于原型的继承模型比传统的类继承还要强大。
 -实现传统的类继承模型是很简单，但是实现 JavaScript 中的原型继承则要困难的多。
 +例如，很容易通过原型继承实现传统的类继承模型，但是反过来，通过传统的类继承模型来实现原型继承模型就困难得多。
 (It is for example fairly trivial to build a classic model on top of it, while the
 other way around is a far more difficult task.)