Cleanup: Rename preferences ui file names according the standard

Signed-off-by: Stefan Fuchs <sfuchs@gmx.de>

desktop-widgets/preferences/CMakeLists.txt

@@ -9,8 +9,8 @@ set(SUBSURFACE_PREFERENCES_UI
   preferences_graph.ui
   preferences_network.ui
   preferences_units.ui
-  prefs_georeference.ui
-  prefs_language.ui
+  preferences_georeference.ui
+  preferences_language.ui
 )
 
 qt5_wrap_ui(SUBSURFACE_PREFERENCES_UI_HDRS ${SUBSURFACE_PREFERENCES_UI})

desktop-widgets/preferences/preferences_georeference.cpp

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "preferences_georeference.h"
-#include "ui_prefs_georeference.h"
+#include "ui_preferences_georeference.h"
 #include "core/prefs-macros.h"
 #include "core/qthelper.h"
 #include "core/subsurface-qt/SettingsObjectWrapper.h"

desktop-widgets/preferences/preferences_language.cpp

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "preferences_language.h"
-#include "ui_prefs_language.h"
+#include "ui_preferences_language.h"
 #include "core/helpers.h"
 #include "core/subsurface-qt/SettingsObjectWrapper.h"