Update tutorial_enhancement.html

Author: mravanelli

tutorial_enhancement.html

@@ -38,7 +38,7 @@
 						<!-- Collect the nav links, forms, and other content for toggling -->
 						<div class="collapse navbar-collapse offset" id="navbarSupportedContent">
 							<ul class="nav navbar-nav menu_nav justify-content-center">
-								<li class="nav-item active"><a class="nav-link" href="">Home</a></li>
+								<li class="nav-item active"><a class="nav-link" href="index.html">Home</a></li>
 								<li class="nav-item"><a class="nav-link" href="about.html">About SpeechBrain</a>
 								<li class="nav-item"><a class="nav-link" href="contributing.html">Contributing</a>
 								<li class="nav-item"><a class="nav-link" href="https://speechbrain.readthedocs.io/en/latest/index.html">Documentation</a>