💄 Removed comma on quickstart.njk

Removed an unnecessary comma at the introduction

user-guide/introduction/quickstart.njk

@@ -8,7 +8,7 @@ title: Quickstart
 
 <h2>In your browser</h2>
 <p>To use Penpot online point your browser to <a href="https://design.penpot.app" target="_blank">design.penpot.app</a> and start designing. Use the latest Google Chrome or Mozilla Firefox for the best experience. We also provide specific support to WebKit (Safari / Epiphany).</p>
-<p>You can also go to <a href="https://penpot.app" target="_blank">penpot.app</a> if you want to read more about Penpot and our new releases. There, click on the Signup button. You will be asked to create an account. We only ask for an email. There are some authentication providers available, too.</p>
+<p>You can also go to <a href="https://penpot.app" target="_blank">penpot.app</a> if you want to read more about Penpot and our new releases. There, click on the Signup button. You will be asked to create an account. We only ask for an email. There are some authentication providers available too.</p>
 
 <h2>On your own server</h2>
 <p>Currently, private Penpot instances only require basic Docker knowledge.</p>