Enable spec templates

doc/spec/element_conf.py

@@ -45,7 +45,7 @@
 # needs_sphinx = '1.0'
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['../../../_templates']
+templates_path = ['_templates']
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:

doc/spec/source/_templates/layout.html

@@ -0,0 +1,25 @@
+<!--
+SPDX-FileCopyrightText: 2019-2023 Intel Corporation
+
+SPDX-License-Identifier: MIT
+-->
+
+{% extends "!layout.html" %}
+
+          {% block sidebartitle %}
+
+          {% if theme_display_version %}
+            {%- set nav_version = version %}
+            {% if READTHEDOCS and current_version %}
+              {%- set nav_version = current_version %}
+            {% endif %}
+            {% if nav_version %}
+              <div class="version">
+                {{ nav_version }}
+              </div>
+            {% endif %}
+          {% endif %}
+
+          {% include "searchbox.html" %}
+
+          {% endblock %}