docs: add note about nested path reporting in effect's schema filter error paths section

Author: giuliobracci

content/src/content/docs/docs/schema/filters.mdx

@@ -151,7 +151,9 @@ Output:
 
 ## Specifying Error Paths
 
-When validating forms or structured data, it's possible to associate specific error messages with particular fields or paths. This enhances error reporting and is especially useful when integrating with libraries like [react-hook-form](https://react-hook-form.com/).
+When validating forms or structured data, it's possible to associate specific error messages with particular fields or paths, **including nested paths within complex objects**. This enhances error reporting and is especially useful when integrating with libraries like [react-hook-form](https://react-hook-form.com/).
+
+**Note**: To specify nested path in the `path` value: `["my", "nested", "path"]`.
 
 **Example** (Matching Passwords)