Fix typo

Author: mrmrs

docs/typography/font-family/index.html

@@ -69,9 +69,9 @@ <h4 class="f4 mv0 fw6 dib mr4">font-family</h4>
           performant webpages it comes with a variety of font stacks that utilize attractive system fonts with appropriate fallbacks.
         </p>
         <p class="measure f5 f4-ns lh-copy">
-          Whlie systems fonts greatly improves performance, it can also help
-          your web application/site blend in with the surrounding browser and operating
-          system to create a more fluid reading experience and allowing your users to
+          Relying on systems fonts greatly improves page performance and can also help
+          your web application/site blend in with the users operating
+          system. This can help create a more fluid reading experience, allowing your users to
           focus on your content.
         </p>
       </article>

src/templates/docs/font-family/index.html

@@ -42,9 +42,9 @@ <h4 class="f4 mv0 fw6 dib mr4"><%= name %></h4>
           performant webpages it comes with a variety of font stacks that utilize attractive system fonts with appropriate fallbacks.
         </p>
         <p class="measure f5 f4-ns lh-copy">
-          Whlie systems fonts greatly improves performance, it can also help
-          your web application/site blend in with the surrounding browser and operating
-          system to create a more fluid reading experience and allowing your users to
+          Relying on systems fonts greatly improves page performance and can also help
+          your web application/site blend in with the users operating
+          system. This can help create a more fluid reading experience, allowing your users to
           focus on your content.
         </p>
       </article>