fix(menu): translate submenu documentation comments to English

Updated documentation comments in `submenu.rs` and `menu.rs` to provide
English translations for better accessibility and understanding by
developers. This change enhances code readability and maintains
consistency in the codebase.

Author: s00d

crates/tauri/src/menu/builders/menu.rs

@@ -154,16 +154,16 @@ impl<'m, R: Runtime, M: Manager<R>> SubmenuBuilder<'m, R, M> {
     }
   }
 
-  /// Установить иконку для подменю.
-  /// Вызов этого метода сбрасывает native_icon.
+  /// Set an icon for the submenu.
+  /// Calling this method resets the native_icon.
   pub fn submenu_icon(mut self, icon: crate::image::Image<'m>) -> Self {
     self.icon = Some(icon);
     self.native_icon = None;
     self
   }
 
-  /// Установить нативную иконку для подменю.
-  /// Вызов этого метода сбрасывает icon.
+  /// Set a native icon for the submenu.
+  /// Calling this method resets the icon.
   pub fn submenu_native_icon(mut self, icon: NativeIcon) -> Self {
     self.native_icon = Some(icon);
     self.icon = None;