修改： README.md

README.md

@@ -27,7 +27,7 @@ Running it:
 
         ./crmask.py your_file.fits your_model
 
-where **your__file.fits** is the filename of the image which you want to do cosmic ray detection, and **your__model** is the algorithm you select. Available algorithms are _deepCR_ and _lacosmic_.
+where **your\_file.fits** is the filename of the image which you want to do cosmic ray detection, and **your\_model** is the algorithm you select. Available algorithms are _deepCR_ and _lacosmic_.
 
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 下载crmask.py，crmask.ini这两个文件。