fix: added aria label to articles navigation

risk: low
JIRA: DP-3086

Author: ParzivalPavlis

docs/layouts/partials/sidebar-tree.html

@@ -2,7 +2,7 @@
 <input type="checkbox" id="gd-docs-menu__mobile-trigger" class="gd-docs-menu__mobile-trigger" />
 <label for="gd-docs-menu__mobile-trigger" class="gd-docs-menu__mobile-icon"></label>
 <div class="gd-docs-menu__mobile-bg"></div>
-<nav class="gd-docs-menu init">
+<nav id="gd-docs-menu" class="gd-docs-menu init" aria-label="Articles">
   {{ $additionalNavRoot := .Site.GetPage "/versions" }}
   {{ $root := .Site.GetPage "/docs" }}