Merge pull request #258 from DaiQiangReal/patch-2

fix: HashMap 章节 错别字

book/contents/basic/collections/hashmap.md

@@ -231,7 +231,7 @@ use std::collections::HashMap;
 let text = "hello world wonderful world";
 
 let mut map = HashMap::new();
-// 根据空格来且分字符串(英文单词都是通过空格切分)
+// 根据空格来切分字符串(英文单词都是通过空格切分)
 for word in text.split_whitespace() {
     let count = map.entry(word).or_insert(0);
     *count += 1;