Update parent page title for Pages and Topics

Author: paulinebessoles

docs/en/modules/ROOT/nav.adoc

@@ -42,7 +42,7 @@
 *** xref:admin:scopes.adoc[Scopes]
 *** xref:admin:areas.adoc[Areas]
 *** xref:admin:help_sections.adoc[Help sections]
-** xref:admin:pages.adoc[Pages]
+** xref:admin:pages.adoc[Pages and Topics]
 *** xref:admin:pages/pages.adoc[Pages]
 *** xref:admin:pages/topics.adoc[Topics]
 ** xref:admin:participants.adoc[Participants]

docs/en/modules/admin/pages/pages.adoc

@@ -1,4 +1,4 @@
-= Pages
+= Pages and Topics
 
 == What is it?