Update README.md

Author: yumao233

README.md

@@ -61,14 +61,10 @@ htop
         command
   -coder string
         Coder (default "UTF-8")
-  -color
-        colorable (default false)
   -dir string
         command work path (default ".")
   -size string
         Initialize pty size, stdin will be forwarded directly (default "50,50")
-  -test
-        Test whether the system environment is pty compatible
 ```
 
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