refactor(navbar): change wrong title of the 'sd_model' vignette

_navbar.html

@@ -21,7 +21,7 @@
 						<li><a href="page_2.2_param_mcmc.html">Parameter estimation within a Bayesian MCMC framework</a></li>
 						<li><a href="page_3_param_sets_GR4J.html">Generalist parameter sets for the GR4J model</a></li>
 						<li><a href="page_4_cemaneige_hysteresis.html">Using satellite snow cover area data for calibrating and improving CemaNeige</a></li>
-						<li><a href="page_5_sd_model.html">Simulating a reservoir with semi-distributed GR4J model</a></li>
+						<li><a href="page_5_sd_model.html">Simulated vs observed upstream flows in calibration of semi-distributed GR4J model</a></li>
 					</ul>
 				</li>
 				<li class="Download">