Update Example Link!

Microsoft removed the plugin example folder from Master in microsoft/cordova-samples#56

Author: bhaveshgohel

readme.md

@@ -2628,7 +2628,7 @@ function reportValue(serviceUuid, characteristicUuid, value) {
 
 ```
 
-That's it! Find the complete sample here: https://github.com/Microsoft/cordova-samples/tree/master/cordova-plugin-bluetoothle.
+That's it! Find the complete sample here: https://github.com/Microsoft/cordova-samples/tree/c3135acbf5e59c0b7fd0f7f097c07c57aa275974/cordova-plugin-bluetoothle.
 
 
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