Rename fn scroll2 to fn scroll (#4282)

crates/egui_demo_lib/src/demo/code_example.rs

@@ -115,7 +115,7 @@ impl super::Demo for CodeExample {
             .open(open)
             .min_width(375.0)
             .default_size([390.0, 500.0])
-            .scroll2(false)
+            .scroll(false)
             .resizable([true, false])
             .show(ctx, |ui| self.ui(ui));
     }

crates/egui_demo_lib/src/demo/tests.rs

@@ -372,7 +372,7 @@ impl super::Demo for InputTest {
             .default_width(800.0)
             .open(open)
             .resizable(true)
-            .scroll2(false)
+            .scroll(false)
             .show(ctx, |ui| {
                 use super::View as _;
                 self.ui(ui);

crates/egui_demo_lib/src/demo/window_options.rs

@@ -67,7 +67,7 @@ impl super::Demo for WindowOptions {
             .constrain(constrain)
             .collapsible(collapsible)
             .title_bar(title_bar)
-            .scroll2(scroll2)
+            .scroll(scroll2)
             .enabled(enabled);
         if closable {
             window = window.open(open);