 
   ## Examples
 
-  It unregister all entries for `key` for unique registries:
+  For unique registries:
 
       iex> Registry.start_link(:unique, Registry.UniqueUnregisterTest)
       iex> Registry.register(Registry.UniqueUnregisterTest, "hello", :world)

  lookup.

  This function returns `{:ok, owner}` or `{:error, reason}`.
  The `owner` is the pid is the registry partition responsible for
  the pid. The owner is automatically linked to the caller.

  If the registry has unique keys, it will return `{:ok, owner}` unless

      iex> Registry.keys(Registry.UniqueUnregisterTest, self())
      []

  For duplicate registries:

      iex> Registry.start_link(:duplicate, Registry.DuplicateUnregisterTest)
      iex> Registry.register(Registry.DuplicateUnregisterTest, "hello", :world)
