website: adds link to Google Fonts

docs/index.html

@@ -93,7 +93,8 @@ endfor
       <p>
         Using Inter is as easy as
         <a class="download-link" href="{{download_url}}">downloading &amp; installing</a>
-        the font files. If you're making a web thing, you can simply use this CSS:
+        the font files. If you're making a web thing, you can use the following CSS or
+        get it from <a href="https://fonts.google.com/specimen/Inter">Google Fonts</a>.
       </p>
       <pre>@import url('https://rsms.me/inter/inter.css');
 html { font-family: 'Inter', sans-serif; }