Fixed table of contents title not showing

material/partials/toc.html

@@ -2,8 +2,8 @@
   This file was automatically generated - do not edit
 -#}
 {% set title = lang.t("toc") %}
-{% if config.mdx_configs.toc and config.mdx_configs.toc %}
-  {% set title = config.mdx_configs.toc %}
+{% if config.mdx_configs.toc and config.mdx_configs.toc.title %}
+  {% set title = config.mdx_configs.toc.title %}
 {% endif %}
 <nav class="md-nav md-nav--secondary" aria-label="{{ title }}">
   {% set toc = page.toc %}

src/partials/toc.html

@@ -22,8 +22,8 @@
 
 <!-- Determine title -->
 {% set title = lang.t("toc") %}
-{% if config.mdx_configs.toc and config.mdx_configs.toc %}
-  {% set title = config.mdx_configs.toc %}
+{% if config.mdx_configs.toc and config.mdx_configs.toc.title %}
+  {% set title = config.mdx_configs.toc.title %}
 {% endif %}
 
 <!-- Table of contents -->