Update: README.md

README.md

@@ -23,7 +23,7 @@ The datatype is judged by whether the bed file is set (i.e. the `regions` in inp
 
 We recommend using choppy system and Aliyun OSS service. The command will look like this:
 
-```Shell
+```
 # Activate the choppy environment
 $ open-choppy-env