Update item5.md

Fix type error.
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deximy 2020-07-17 12:34:30 +08:00 committed by GitHub
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@ -16,7 +16,7 @@ int x;
别介意,让我们转换一个话题, 对一个局部变量使用解引用迭代器的方式初始化:
````cpp
template<typename T>
template<typename It>
void dwim(It b, It e)
{
while(b!=e){