Fix sidebar home button link (Issue #248)

Signed-off-by: Gyan Ranjan Panda <gyanranjanpanda@gmail.com>

Author: Gyan Ranjan Panda

docs/source/_templates/layout.html

@@ -1,8 +1,35 @@
 {% extends "!layout.html" %}
 
+{%- block sidebartitle %}
+
+          {# the logo helper function was removed in Sphinx 6 and deprecated since Sphinx 4 #}
+          {# the master_doc variable was renamed to root_doc in Sphinx 4 (master_doc still exists in later Sphinx versions) #}
+          {%- set _logo_url = logo_url|default(pathto('_static/' + (logo or ""), 1)) %}
+          {%- set _root_doc = root_doc|default(master_doc) %}
+          <a href="https://aboutcode.org" class="icon icon-home">
+            {% if not theme_logo_only %}{{ project }}{% endif %}
+            {%- if logo or logo_url %}
+              <img src="{{ _logo_url }}" class="logo" alt="{{ _('Logo') }}"/>
+            {%- endif %}
+          </a>
+
+          {%- if READTHEDOCS or DEBUG %}
+            {%- if theme_version_selector or theme_language_selector %}
+              <div class="switch-menus">
+                <div class="version-switch"></div>
+                <div class="language-switch"></div>
+              </div>
+            {%- endif %}
+          {%- endif %}
+
+          {%- include "searchbox.html" %}
+
+{%- endblock %}
+
   {% block menu %}
     {{ super() }}
     <div class="toc-index-div">
         <a href="{{pathto('genindex.html', 1)}}" class="reference internal toc-index">Index</a>
     </div>
   {% endblock %}
+