update doc (alibaba#485)

Neil-Boyle · Jan 29, 2019 · efb8358 · efb8358
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diff --git a/site/src/site/sphinx/en/tt.md b/site/src/site/sphinx/en/tt.md
@@ -57,7 +57,7 @@ Affect(class-cnt:1 , method-cnt:1) cost in 66 ms.
 * Condition expression
 
 Tips:
-1. `tt -t *Test print params[0].length==1` with different amounts of parameters;
+1. `tt -t *Test print params.length==1` with different amounts of parameters;
 2. `tt -t *Test print 'params[1] instanceof Integer'` with different types of parameters;
 3. `tt -t *Test print params[0].mobile=="13989838402"` with specified parameter.
 

diff --git a/site/src/site/sphinx/tt.md b/site/src/site/sphinx/tt.md
@@ -68,7 +68,7 @@ Affect(class-cnt:1 , method-cnt:1) cost in 66 ms.
 
 - 解决方法重载
 
-     `tt -t *Test print params[0].length==1`
+     `tt -t *Test print params.length==1`
 
      通过制定参数个数的形式解决不同的方法签名，如果参数个数一样，你还可以这样写