tdf#105445 Change label "Export comments" to "Comments as PDF annotations"

Change-Id: I7036c2e699eb394f008fe3eeb1b93247b8c6fb22
Reviewed-on: https://gerrit.libreoffice.org/68696
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <tietze.heiko@gmail.com>

filter/uiconfig/ui/pdfgeneralpage.ui

@@ -606,7 +606,7 @@
                 </child>
                 <child>
                   <object class="GtkCheckButton" id="comments">
-                    <property name="label" translatable="yes" context="pdfgeneralpage|comments">_Export comments</property>
+                    <property name="label" translatable="yes" context="pdfgeneralpage|comments">_Comments as PDF annotations</property>
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
                     <property name="receives_default">False</property>