[BUGFIX] Add translated submenu item links

Related: T3DEMO-267

src/extensions/site_t3demo/Resources/Private/Pages/Partials/Header.html

@@ -56,15 +56,15 @@
 									</label>
 								</li>
 								<li class="b_navi__subitem b_navi__subitem--parentpage">
-									<a href="{item.slug}" class="b_navi__link b_navi__link--level-2 {f:if(condition: item.isCurrentPage, then: 'b_navi__link--active')}">
+									<f:link.typolink parameter="{item.uid}" class="b_navi__link b_navi__link--level-2 {f:if(condition: item.isCurrentPage, then: 'b_navi__link--active')}">
 										<span>{item.nav_title}</span>
-									</a>
+									</f:link.typolink>
 								</li>
 								<f:for each="{item.subpages}" as="item">
 									<li class="b_navi__subitem">
-										<a href="{item.slug}" class="b_navi__link b_navi__link--level-2 {f:if(condition: item.isInRootLine, then: 'b_navi__link--active')}">
+										<f:link.typolink parameter="{item.uid}" class="b_navi__link b_navi__link--level-2 {f:if(condition: item.isInRootLine, then: 'b_navi__link--active')}">
 											<span>{item.nav_title}</span>
-										</a>
+										</f:link.typolink>
 									</li>
 								</f:for>
 							</ul>
@@ -110,7 +110,6 @@
 					</f:else>
 				</f:if>
 			</div>
-
 		</div>
 
 	</div>