修改： README.md

README.md

@@ -24,8 +24,10 @@ Install these package under Ubuntu 20.04 LTS:
 Download crmask.py and crmask.ini, put them in the same directory.
 
 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。