Change presets label from default to preset in border tab

Change-Id: I77bd74579ca254c880276deaceffd3be425a8e70
Reviewed-on: https://gerrit.libreoffice.org/28654Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

cui/uiconfig/ui/borderpage.ui

@@ -82,7 +82,7 @@
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="xalign">0</property>
-                        <property name="label" translatable="yes">_Default:</property>
+                        <property name="label" translatable="yes">Pr_esets:</property>
                         <property name="use_underline">True</property>
                         <property name="mnemonic_widget">presets</property>
                       </object>