Fix docs.rs link to Raycast struct (#108)

The link pointed to the struct before the immediate / deferred module split.

README.md

@@ -13,7 +13,7 @@ A small [Bevy](https://github.com/bevyengine/bevy) plugin for mesh raycasting.
 
 ## Getting Started
 
-Using the [`Raycast`](https://docs.rs/bevy_mod_raycast/latest/bevy_mod_raycast/system_param/struct.Raycast.html) system param, you don't even need to add a plugin, you can directly raycast into the ECS:
+Using the [`Raycast`](https://docs.rs/bevy_mod_raycast/latest/bevy_mod_raycast/immediate/struct.Raycast.html) system param, you don't even need to add a plugin, you can directly raycast into the ECS:
 
 ```rs
 use bevy_mod_raycast::prelude::*;
@@ -43,4 +43,4 @@ I intend to track the `main` branch of Bevy. PRs supporting this are welcome!
 | 0.6  | 0.3              |
 | 0.5  | 0.2              |
 | 0.4  | 0.1              |
-</details>
+</details>