Fix sidebar.js to only reference existing documents

Author: MDUYN

docusaurus/sidebar.js

@@ -73,14 +73,6 @@ const sidebars = {
             type: 'category',
             label: 'Advanced Concepts',
             items: [
-                {
-                    type: 'doc',
-                    id: 'Advanced Concepts/logging-configuration',
-                },
-                {
-                    type: 'doc',
-                    id: 'Advanced Concepts/execution-logic',
-                },
                 {
                     type: 'doc',
                     id: 'Advanced Concepts/vector-backtesting',