Corrects wrong i18n value for documentation

src/app/editorialisation/components/site-map/site-map.component.html

@@ -9,7 +9,7 @@
         <li><a class="link-1" [routerLink]="['/', AppRoutes.research.uri]" i18n="@@sitemap.research">Research</a></li>
         <li><a class="link-1" [routerLink]="['/', AppRoutes.partners.uri]" i18n="@@sitemap.partners">Partners</a></li>
         <li><a class="link-1" [routerLink]="['/', AppRoutes.approach.uri]" i18n="@@sitemap.approach">Approach</a></li>
-        <li><a class="link-1" [routerLink]="['/', AppRoutes.documentation.uri]" i18n="@@sitemap.approach">Documentation</a></li>
+        <li><a class="link-1" [routerLink]="['/', AppRoutes.documentation.uri]" i18n="@@sitemap.documentation">Documentation</a></li>
         <li><a class="link-1" [routerLink]="['/', AppRoutes.reuses.uri]" i18n="@@sitemap.reuses">Reuses</a></li>
         <li><a class="link-1" [routerLink]="['/', AppRoutes.contribution.uri]">Contribution</a></li>
       </ul>
@@ -28,4 +28,4 @@
       </ul>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>