package/qt6/qt6opcua: fix indentation of comment

It was intended with spaces instead of a tab.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt6/qt6opcua/Config.in

@@ -1,8 +1,8 @@
 config BR2_PACKAGE_QT6OPCUA
 	bool "qt6opcua"
 	select BR2_PACKAGE_QT6BASE_NETWORK
-        # qt6opcuda needs host-qt6opcua, and host-qt6opcua needs
-        # network support in qt6base.
+	# qt6opcuda needs host-qt6opcua, and host-qt6opcua needs
+	# network support in qt6base.
 	select BR2_PACKAGE_HOST_QT6BASE_NETWORK
 
 	help