add image for update dialog

Author: psifertex

docs/guide/index.md

@@ -1052,6 +1052,8 @@ For more detailed information on plugins, see the [debugger guide](debugger/inde
 
 ## Updates
 
+![Update Dialog >](../img/update-dialog.png "Update Dialog"){ width="600" }
+
 Binary Ninja automatically updates itself by default. This functionality can be disabled in the `Update Channel` dialog (`[CMD/CTRL] p`, `Update Channel`, or under the `Preferences` sub menu available under `Edit` on Linux and Windows, and the Application menu on macOS) preferences by turning off the `Update to latest version automatically` option. Regardless of whether automatic updates are enabled, it is always possible to check for updates by selecting `Check for Updates...` from either the command palette or under `Help` menu on Linux and Windows, and the Application menu on macOS.
 
 Updates are silently downloaded in the background and when complete an option to restart is displayed in the status bar. When an update is available but has not been applied, a blue up arrow will appear in the status bar. Clicking this arrow will apply the update once it ensures it has the latest update, downloading it if necessary. Once the update is complete, a green arrow will appear in its place with the message "Restart to Apply Update". Even if the arrow is not clicked, once the arrow is green, Binary Ninja will replace itself with the new version as it launches whenever it is restarted.