Tooltip on group creation window has been changed

ubl-settings-usergroups-group-creation.glade

@@ -133,7 +133,7 @@
                     <property name="visible">True</property>
                     <property name="can-focus">True</property>
                     <property name="secondary-icon-name">com.ublinux.ubl-settings-usergroups.profile-symbolic</property>
-                    <property name="placeholder-text" translatable="yes">login</property>
+                    <property name="placeholder-text" translatable="yes">login_name</property>
                   </object>
                   <packing>
                     <property name="expand">True</property>