245860 README: Add the .md extension to the filename (jsc#PED-5021)

Authored and Committed by Petr Pavlu 6 months ago
    README: Add the .md extension to the filename (jsc#PED-5021)
    
    The README document has been converted to Markdown. Add the .md
    extension to its filename so it gets nicely formatted on the Github
    mirror.
    
        
README.md README
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file was renamed with no change to the file