Update README.md

JiangYanting · web-flow · commit 17a3845c7018 · 2020-04-12T14:46:50.000+08:00
diff --git a/README.md b/README.md
@@ -17,7 +17,7 @@
     
     只含一个分类号的图书数量统计如下图所示：
   
-![image](https://github.com/JiangYanting/Chinese_book_dataset/blob/master/%E5%8D%95%E4%B8%80%E7%B1%BB%E5%88%AB%E7%9A%84%E5%9B%BE%E4%B9%A6%E6%95%B0%E9%87%8F%E7%BB%9F%E8%AE%A1.jpg)
+![图书统计](https://github.com/JiangYanting/Chinese_book_dataset/blob/master/%E5%8D%95%E4%B8%80%E7%B1%BB%E5%88%AB%E7%9A%84%E5%9B%BE%E4%B9%A6%E6%95%B0%E9%87%8F%E7%BB%9F%E8%AE%A1.jpg)
     
   
   

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`@@ -17,7 +17,7 @@`
`17`	`17`
`18`	`18`	`只含一个分类号的图书数量统计如下图所示：`
`19`	`19`
`20`		`-![image](https://github.com/JiangYanting/Chinese_book_dataset/blob/master/%E5%8D%95%E4%B8%80%E7%B1%BB%E5%88%AB%E7%9A%84%E5%9B%BE%E4%B9%A6%E6%95%B0%E9%87%8F%E7%BB%9F%E8%AE%A1.jpg)`
	`20`	`+![图书统计](https://github.com/JiangYanting/Chinese_book_dataset/blob/master/%E5%8D%95%E4%B8%80%E7%B1%BB%E5%88%AB%E7%9A%84%E5%9B%BE%E4%B9%A6%E6%95%B0%E9%87%8F%E7%BB%9F%E8%AE%A1.jpg)`
`21`	`21`
`22`	`22`
`23`	`23`