DOC-3303: Remove fullpagehtml from how-to-guides table. (#3902)

Author: kemister85

modules/ROOT/pages/how-to-guides.adoc

@@ -91,12 +91,6 @@ xref:events.adoc[Available Events]
 
 List of common editor events
 
-a|
-[.lead]
-xref:fullpagehtml.adoc[Full Page HTML Plugin]
-
-Edit document metadata and properties including title, keywords, and description via dialog interface.
-
 a|
 [.lead]
 xref:keyboard-shortcuts.adoc[Keyboard shortcuts]