Use prelude import in generators doc example

src/generators.rs

@@ -12,9 +12,9 @@ use crate::traits::{GraphTopology, GraphTopologyAddition, GraphTopologyConversio
 /// # Examples
 ///
 /// ```
+/// use grapherity::prelude::*;
 /// use grapherity::generators;
 /// use grapherity::models::FrozenGraph;
-/// use grapherity::traits::GraphTopology;
 ///
 /// let (graph, vertices, edges) = generators::generate_as::<FrozenGraph, _, _>(generators::petersen);
 /// assert_eq!(graph.vertex_count(), 10);