undate readme for binaries chap

Author: straightdave

6-bin-str-charlist.md

@@ -174,8 +174,6 @@ iex> rest
 "llo"
 ```
 
-A complete reference about the binary / bitstring constructor <<>> can be found in the Elixir documentation. This concludes our tour of bitstrings, binaries and strings. A string is a UTF-8 encoded binary and a binary is a bitstring where the number of bits is divisible by 8. Although this shows the flexibility Elixir provides for working with bits and bytes, 99% of the time you will be working with binaries and using the is_binary/1 and byte_size/1 functions.
-
 关于二进制串/比特串的构造器`<< >>`完整的参考，
 请见[Elixir的文档](http://elixir-lang.org/docs/stable/elixir/Kernel.SpecialForms.html#%3C%3C%3E%3E/1)。
 

README.md

@@ -32,7 +32,7 @@ Elixir还是一门初出茅庐的语言：
 [3-基本运算符](../master/3-basic-ops.md) <br/>
 [4-模式匹配](../master/4-pattern-matching.md) <br/>
 [5-流程控制](../master/5-case-cond-if.md) <br/>
-[6-二进制-字符串-字符列表](../master/6-bin-str-charlist.md) <br/>
+[6-二进制串-字符串-字符列表](../master/6-bin-str-charlist.md) <br/>
 [7-键值-图-字典](../master/7-keywords-map-dict.md) <br/>
 [8-模块](../master/8-modules.md) <br/>
 [9-递归](../master/9-recursion.md) <br/>