Remove space before colon in gradient tab of area tab

Change-Id: I9699d4065850f953e71a581488d0ca7cc62351f8
Reviewed-on: https://gerrit.libreoffice.org/45034
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>
diff --git a/cui/uiconfig/ui/gradientpage.ui b/cui/uiconfig/ui/gradientpage.ui
index 92b23f0..e6debc8 100644
--- a/cui/uiconfig/ui/gradientpage.ui
+++ b/cui/uiconfig/ui/gradientpage.ui
@@ -296,7 +296,7 @@
                      <object class="GtkLabel" id="centerft">
                        <property name="visible">True</property>
                        <property name="can_focus">False</property>
                        <property name="label" translatable="yes" context="gradientpage|centerft">Center ( X / Y ) :</property>
                        <property name="label" translatable="yes" context="gradientpage|centerft">Center ( X / Y ):</property>
                        <property name="use_underline">True</property>
                        <property name="xalign">0</property>
                        <property name="yalign">0.43999999761581421</property>