Android: Make UI text more clear

The definite article "the" should be "an", but I would like
to rewrite the notice to use simpler language.

Change-Id: Ic611343724f32b3b1f22a5c768c387cafceb0890
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>

src/plugins/android/androidrunconfigurationwidget.ui

@@ -78,7 +78,7 @@
    <item row="2" column="2">
     <widget class="QLabel" name="label_3">
      <property name="text">
-      <string>Conflicting "am start" options might result in the app startup failure.</string>
+      <string>If the "am start" options conflict, the application might not start.</string>
      </property>
     </widget>
    </item>