Update install.html

Updated link.

Author: sreichel

openmage/install.html

@@ -68,7 +68,7 @@ <h2 class="graphic-info__title">Install via composer</h2>
                 <h4 class="card-title">Install instructions</h4>
                 <p class="install-instructions__warning">
                     Continue reading:
-                    <a href="https://docs.openmage.org/users/install/_use-composer/">https://docs.openmage.org/users/install/use-composer/</a>
+                    <a href="https://docs.openmage.org/users/install/use-composer/">https://docs.openmage.org/users/install/use-composer/</a>
                 </p>
             </div>
         </div>