[docs] Fix grammar mistake

docs/index.html

@@ -8,7 +8,7 @@ <h1 class="display-4 text-center"><strong>Cemu Graphic Packs</strong></h1>
 <div class="jumbotron pt-4 pb-4" style="background-color: #127282;">
 	<h3>Downloads</h3>
 	<div><strong>Automatic installation instructions (recommended)</strong></div>
-	<div>Use Cemu's build-in graphic packs downloader (a new feature added in Cemu 1.15.1) to automatically retrieve the newest graphic packs from our repository.</div>
+	<div>Use Cemu's built-in graphic packs downloader (a new feature added in Cemu 1.15.1) to automatically retrieve the newest graphic packs from our repository.</div>
 	<div><strong>Manual installation instructions</strong></div>
 	<div class="mb-3">Remove all of your graphic packs first, then move all of the folders from a downloaded .zip below to the <kbd>graphicPacks</kbd> folder from your Cemu folder.</div>
 	<p class="pt-2 mb-1"><strong>Select the download for your Cemu version</strong></p>