Modified navbar item highlight class from bg-light to bg-dark-subtle

Signed-off-by: alexmerlin <alex.merlin.1985@gmail.com>

Author: alexmerlin

theme/partials/navbar.html

@@ -13,7 +13,7 @@
                     <span class="fw-bold dropdown-toggle dk-pkg-name" data-bs-toggle="dropdown" aria-expanded="false">{{ config.extra.project }}</span>
                     <ul class="dropdown-menu">
                         {% for project in config.extra.projects %}
-                        <li class="dropdown-item {{ 'bg-light' if config.extra.project == project.name }}">
+                        <li class="dropdown-item {{ 'bg-dark-subtle' if config.extra.project == project.name }}">
                             <a href="{{ project.docs_url }}" class="nav-link d-flex gap-4 align-items-center">
                                 <i class="bi bi-arrow-return-right text-primary"></i>
                                 <div class="py-1">