docs: fix FBXLoader naming in loading-models (#3745)

Author: pavan-sh

docs/tutorials/loading-models.mdx

@@ -126,7 +126,7 @@ import { useLoader } from '@react-three/fiber'
 import { FBXLoader } from 'three/addons/loaders/FBXLoader.js'
 ```
 
-To create our scene we can get the FBX as a return value of the useLoader by passing the `FBXloader` and the location of our file like so:
+To create our scene we can get the FBX as a return value of `useLoader` by passing `FBXLoader` and the location of our file like so:
 
 ```jsx
 function Scene() {