fix imports

Author: Lendemor

blog/2024-04-16-custom-components.md

@@ -10,7 +10,7 @@ meta: [
 ---
 
 ```python exec
-from pcweb.pages.docs import wrapping_react, custom_components, styling, events, getting_started, substates
+from pcweb.pages.docs import wrapping_react, custom_components, styling, events, getting_started, component_state
 from pcweb.pages.docs.custom_components import custom_components as cc
 ```
 
@@ -118,7 +118,7 @@ def counter_sum():
     )
 ```
 
-See the [Component State]({substates.component_state.path}) page for more details on how to use this class.
+See the [Component State]({component_state.overview.path}) page for more details on how to use this class.
 
 ## Testing and Publishing