Update webgpurenderer.html

Clean up.

manual/en/webgpurenderer.html

@@ -107,7 +107,7 @@ document.body.appendChild( renderer.domElement );
               It's important to understand that WebGPU is initialized in an asynchronous fashion. Hence, it is recommended to use 
               `setAnimationLoop()` to define the animation loop of your app since this approach will automatically ensure the renderer
               is initialized when rendering the first frame. If you prefer to manage your animation loop via `window.requestAnimationFrame()` or
-              if you have to use to the renderer in your init routine, you need an additional line in the above code section.
+              if you have to use the renderer in your init routine, you need an additional line in the above code section.
             </p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">
 const renderer = new THREE.WebGPURenderer( { antialias: true } );