update documentation (#2064)

Author: mikkonie

docs_manual/source/_static/app_landingzones/zone_prohibit.png

@@ -89,6 +89,26 @@ Other collections expected for a specific landing zone depend on the assay
 configuration. For detailed reference on which assay type expects which
 collections, see :ref:`metadata_advanced`.
 
+
+.. _app_landingzones_transfer_prohibit:
+
+Prohibited File Types
+---------------------
+
+Project owner or delegate may prohibit the uploading of certain files by file
+suffix. The user is notified of a possible restriction in the zone list and
+create view UI. This limitation is project specific.
+
+If prohibited file types are uploaded, landing zone validation and moving will
+fail with an error message listing the offending files. Removing those files and
+associated checksum files will allow you to validate and move your landing zone.
+
+.. figure:: _static/app_landingzones/zone_prohibit.png
+    :align: center
+    :scale: 75%
+
+    Prohibited files alert
+
 Replacing Files
 ---------------
 

docs_manual/source/app_landingzones_transfer.rst

@@ -48,6 +48,11 @@ Notify members of landing zone uploads
     Send project members email updates for file uploads using landing zones. For
     more information, see the
     :ref:`Landing Zones app documentation <app_landingzones>`.
+Prohibited file types
+    If you want to prohibit uploading files of certain types to the project,
+    add related file suffixes here as a comma-separated list. The file suffixes
+    will be checked during landing zone validation. For more information, see
+    :ref:`app_landingzones_transfer_prohibit`.
 Allow sample sheet editing
     Enable or disable editability of sample sheets in the project.
 Enable sheet synchronization