feat(electron): add documentation button in help menu bar (#7199)

Co-authored-by: Peng Xiao <pengxiao@outlook.com>

packages/frontend/electron/src/main/application-menu/create.ts

@@ -143,6 +143,16 @@ export function createApplicationMenu() {
             await checkForUpdates();
           },
         },
+        {
+          label: 'Documentation',
+          click: async () => {
+            // eslint-disable-next-line @typescript-eslint/no-var-requires
+            const { shell } = require('electron');
+            await shell.openExternal(
+              'https://docs.affine.pro/docs/hello-bonjour-aloha-你好'
+            );
+          },
+        },
       ],
     },
   ];