fix: onPopoverRender definition is wrong (#398)

docs/src/content/guides/theming.mdx

@@ -73,7 +73,7 @@ type PopoverDOM = {
   footerButtons: HTMLElement;
 };
 
-onPopoverRender?: (popover: PopoverDOM) => void;
+onPopoverRender?: (popover: PopoverDOM, opts: { config: Config; state: State }) => void;
 ```
 
 ## Styling Page

src/config.ts

@@ -33,7 +33,7 @@ export type Config = {
   doneBtnText?: string;
 
   // Called after the popover is rendered
-  onPopoverRender?: (popover: PopoverDOM) => void;
+  onPopoverRender?: (popover: PopoverDOM, opts: { config: Config; state: State }) => void;
 
   // State based callbacks, called upon state changes
   onHighlightStarted?: DriverHook;