fix for pleroma assets group update

docs/API/admin_api.md

@@ -763,15 +763,17 @@ Example of setting without keyword in value:
 config :tesla, :adapter, Tesla.Adapter.Hackney
 ```
 
-List of settings which have list in value:
+List of settings which support only full update:
 ```elixir
 @full_key_update [
     {:pleroma, :ecto_repos},
+    {:pleroma, :assets},
     {:quack, :meta},
     {:mime, :types},
     {:cors_plug, [:max_age, :methods, :expose, :headers]},
     {:auto_linker, :opts},
-    {:swarm, :node_blacklist}
+    {:swarm, :node_blacklist},
+    {:logger, :backends}
   ]
 ```
 

lib/pleroma/web/admin_api/config.ex

@@ -48,6 +48,7 @@ def update(%Config{} = config, %{value: value}) do
 
   @full_key_update [
     {:pleroma, :ecto_repos},
+    {:pleroma, :assets},
     {:quack, :meta},
     {:mime, :types},
     {:cors_plug, [:max_age, :methods, :expose, :headers]},