Reformat documention comments following fix for rust-lang/rustfmt#3751.

Author: olson-sean-k

plexus/src/buffer.rs

@@ -449,7 +449,8 @@ where
     /// let cube = Cube::new();
     /// let (indices, vertices) = primitive::zip_vertices((
     ///     cube.polygons::<Position<E3>>(),
-    ///     cube.polygons::<Normal<E3>>().map_vertices(|normal| normal.into_inner()),
+    ///     cube.polygons::<Normal<E3>>()
+    ///         .map_vertices(|normal| normal.into_inner()),
     /// ))
     /// .triangulate()
     /// .index_vertices::<Flat3, _>(HashIndexer::default());
@@ -689,7 +690,9 @@ where
     /// # fn main() {
     /// let cube = Cube::new();
     /// let buffer = MeshBuffer3::<usize, _>::from_raw_buffers(
-    ///     cube.indexing_polygons::<Position>().triangulate().vertices(),
+    ///     cube.indexing_polygons::<Position>()
+    ///         .triangulate()
+    ///         .vertices(),
     ///     cube.vertices::<Position<Point3<f32>>>(),
     /// )
     /// .unwrap();

plexus/src/graph/view/face.rs

@@ -177,7 +177,12 @@ where
     ///     .polygons::<Position<Point3<N64>>>()
     ///     .collect::<MeshGraph<Point3<f64>>>();
     /// let key = graph.faces().nth(0).unwrap().key();
-    /// let face = graph.face_mut(key).unwrap().extrude(1.0).unwrap().into_ref();
+    /// let face = graph
+    ///     .face_mut(key)
+    ///     .unwrap()
+    ///     .extrude(1.0)
+    ///     .unwrap()
+    ///     .into_ref();
     ///
     /// // This would not be possible without conversion into an immutable view.
     /// let _ = face.into_arc();

plexus/src/primitive/generate.rs

@@ -197,9 +197,7 @@ pub trait Generator: Sized {
     ///
     /// let cube = Cube::new();
     ///
-    /// let positions = cube
-    ///     .vertices::<Position<E3>>()
-    ///     .collect::<Vec<_>>();
+    /// let positions = cube.vertices::<Position<E3>>().collect::<Vec<_>>();
     /// let indices = cube
     ///     .indexing_polygons::<Position>()
     ///     .triangulate()

plexus/src/primitive/mod.rs

@@ -122,7 +122,7 @@ pub trait Topological:
     ///     Trigon::from([
     ///         E2::from_xy(-1.0, 0.0),
     ///         E2::from_xy(0.0, 1.0),
-    ///         E2::from_xy(1.0, 0.0)
+    ///         E2::from_xy(1.0, 0.0),
     ///     ]),
     ///     1.0,
     /// );
@@ -890,8 +890,8 @@ impl<T> Topological for Polygon<T> {
 ///     cube.polygons::<Normal<E3>>(),
 ///     cube.polygons::<Plane>(),
 /// ))
-///     .triangulate()
-///     .collect::<Vec<_>>();
+/// .triangulate()
+/// .collect::<Vec<_>>();
 /// # }
 /// ```
 pub fn zip_vertices<T, U>(