Rename WinRT logging category

While the bluetooth port was only available for Windows phone at the
beginning it covers all winrt platforms now.

Change-Id: I9b7ec7a914a481c692c7717e645ebf121d75ab73
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

src/bluetooth/doc/src/bluetooth-index.qdoc

@@ -160,7 +160,7 @@ The \l QtBluetooth module exports the following
     \li qt.bluetooth.qml
      \li Enables logging of the QtBluetooth QML implementation
 \row
-    \li qt.bluetooth.winphone
+    \li qt.bluetooth.winrt
     \li Enables logging of the \l {Qt for WinRT} {WinRT} implementation
 \endtable
 

src/bluetooth/qbluetooth.cpp

@@ -101,6 +101,6 @@ namespace QBluetooth {
 Q_LOGGING_CATEGORY(QT_BT, "qt.bluetooth")
 Q_LOGGING_CATEGORY(QT_BT_ANDROID, "qt.bluetooth.android")
 Q_LOGGING_CATEGORY(QT_BT_BLUEZ, "qt.bluetooth.bluez")
-Q_LOGGING_CATEGORY(QT_BT_WINRT, "qt.bluetooth.winphone")
+Q_LOGGING_CATEGORY(QT_BT_WINRT, "qt.bluetooth.winrt")
 
 QT_END_NAMESPACE