Mention the discord.ui types in the read-only component types

discord/components.py

@@ -132,6 +132,11 @@ class Button(Component):
 
     This inherits from :class:`Component`.
 
+    .. note::
+
+        The user constructible and usable type to create a button is :class:`discord.ui.Button`
+        not this one.
+
     .. versionadded:: 2.0
 
     Attributes
@@ -200,6 +205,11 @@ class SelectMenu(Component):
     A select menu is functionally the same as a dropdown, however
     on mobile it renders a bit differently.
 
+    .. note::
+
+        The user constructible and usable type to create a select menu is
+        :class:`discord.ui.Select` not this one.
+
     .. versionadded:: 2.0
 
     Attributes