Add language tag to readme example code for syntax highlighting

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "grapherity"
-version = "0.2.3"
+version = "0.2.2"
 authors = ["Stefan Müller"]
 edition = "2024"
 rust-version = "1.85.0"

README.md

@@ -15,7 +15,7 @@ For more information, see the [documentation](https://docs.rs/grapherity/latest/
 
 ## Example
 
-```
+```rust
 // Brings commonly used traits into scope.
 use grapherity::prelude::*;
 use grapherity::models::Graph;

src/lib.rs

@@ -127,6 +127,8 @@
 //! [`GraphTopology::Vertex`]: crate::traits::GraphTopology::Vertex
 //! [`GraphTopologyDeletion`]: crate::traits::GraphTopologyDeletion
 
+#![warn(missing_docs)]
+
 pub mod algorithms;
 pub mod maps;
 pub mod models;

src/traits.rs

@@ -222,7 +222,6 @@ pub trait IncidenceCursor<G: GraphTopology + ?Sized> {
     /// ```
     /// # use grapherity::prelude::*;
     /// # use grapherity::models::Graph;
-    /// # use grapherity::traits::IncidenceCursor;
     /// // Constructs a graph with two vertices connected to `v`.
     /// let mut graph = Graph::new();
     /// let v = graph.add_vertex();