[ADD] odoo_partner: added button in knowledge article

Author: dhrs-odoo

odoo_partner/data/knowledge_article.xml

@@ -65,7 +65,10 @@
         <ul>
             <li>Track your sales orders and revenue</li>
         </ul>
-        <p><a class="btn btn-outline-primary btn-sm" href="https://www.odoo.com/documentation/latest/applications/sales/sales.html" target="_blank">🎓 Sales</a></p>
+        <div style="display: flex; gap: 10px; margin-bottom: 0;">
+            <a class="btn btn-primary" href="/odoo?tour=sale_tour" title="">Sales Flow Tutorial</a>
+            <a href="https://www.odoo.com/documentation/latest/applications/sales/sales.html" class="btn btn-primary">🎓 Sales</a>
+        </div>
         <h3><br /></h3>
         <h3>Projects 📊 </h3>
         <p>Utilize the Project app to manage Success Packs and large implementations:</p>