Fix typo

Author: fbiville

_includes/about.html

@@ -6,7 +6,7 @@ <h2 class="section-heading">A family of <a href="https://www.hackergarten.net/"
                 <hr class="light">
                 <p class="text-left"><a href="https://hack-commit-pu.sh" rel="noopener" target="_blank">hack-commit-push</a> is a series of events inviting attendees to start contributing to Free/Open Source projects with the help of their maintainers.<br /> 
                 Get together, support free/open source projects by fixing issues and adding new features and most of all learn and have fun.</p>
-                <p class="text-left">The event is open to every everyone, regardless of their experience.</p>
+                <p class="text-left">The event is open to everyone, regardless of their experience.</p>
                 <p class="text-left">Every contribution counts!</p>
             </div>
         </div>