fix: graphs clipping into the bottom of the box

this isn't the greatest solution, but it works as expected

src/app/graph.rs

@@ -53,7 +53,7 @@ impl canvas::Program<app::Message, Theme, Renderer> for Graph {
                 &canvas::Path::new(|builder| {
                     for (index, value) in self.timeline.iter().enumerate() {
                         let x = index as f32 / self.timeline.len() as f32 * bounds.width;
-                        let y = bounds.height - value / 100. * bounds.height;
+                        let y = bounds.height - value / 100. * bounds.height - 1.;
                         builder.line_to(Point::new(x, y))
                     }
                 }),