Update template from pydata sphinx theme

Author: kinow

src/_templates/sidebar-nav-bs.html

@@ -1,11 +1,8 @@
 <nav class="bd-links d-none d-md-block" id="bd-docs-nav" aria-label="{{ _('Main navigation') }}">
-  <div class="bd-toc-item active">
-    {{ generate_toctree_html("sidebar",
-                             startdepth=0,
-                             show_nav_level=theme_show_nav_level|int,
-                             maxdepth=theme_navigation_depth|int,
-                             collapse=theme_collapse_navigation|tobool,
-                             includehidden=True,
-                             titles_only=True) }}
+  <p class="bd-links__title" role="heading" aria-level="1">
+    {{ _("Section Navigation") }}
+  </p>
+  <div class="bd-toc-item navbar-nav">
+    {{ sidebar_nav_html }}
   </div>
 </nav>