wxGUI: translatable string missing

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@47452 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/gdialogs.py

@@ -693,7 +693,7 @@ class TextLayerDialog(wx.Dialog):
 
         # show/hide
         self.chkbox = wx.CheckBox(parent=self, id=wx.ID_ANY, \
-            label='Show text object')
+            label = _('Show text object'))
         if self.parent.Map.GetOverlay(self.ovlId) is None:
             self.chkbox.SetValue(True)
         else: