Update readme.md

Author: GrazianoCapelli

readme.md

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 A GPS logger for Android mobile devices
 
-[Application is freely downloadable from Google Play(tm)](https://play.google.com/store/apps/details?id=eu.basicairdata.graziano.gpslogger&hl=en) or directly here in this repository in /apk folder
+[The application is freely downloadable from Google Play(tm)](https://play.google.com/store/apps/details?id=eu.basicairdata.graziano.gpslogger&hl=en) or directly here in this repository in /apk folder
 
 ##License##
 BasicAirData is free software licensed under [GNU GPL v3.0](http://www.gnu.org/licenses/gpl-3.0.txt) General Public License