Remove duplicate word from the README log section (#3450)

In the "Logging" section it originally read: "Parse Server, will, by default, will log:", I've removed the second "will" to make "Parse Server will, by default, log:".

Author: BlueHatbRit

README.md

@@ -156,7 +156,7 @@ For a full list of available options, run `parse-server --help`.
 
 ## Logging
 
-Parse Server will, by default, will log:
+Parse Server will, by default, log:
 * to the console
 * daily rotating files as new line delimited JSON