Doc warnings (#2577)

Fixes #2576 

Add <> to links where needed, fix typo and refactored names, and add docs.rs links for external items.

crates/bevy_app/src/app.rs

@@ -440,8 +440,9 @@ impl App {
 
     /// Sets the main runner loop function for this Bevy App
     ///
-    /// Usually the main loop is handled by Bevy integrated plugins ([`WinitPlugin`]), but
-    /// in some cases one might wish to implement their own main loop.
+    /// Usually the main loop is handled by Bevy integrated plugins
+    /// ([`WinitPlugin`](https://docs.rs/bevy/*/bevy/winit/struct.WinitPlugin.html)),
+    /// but in some cases one might wish to implement their own main loop.
     ///
     /// This method sets the main loop function, overwriting a previous runner if any.
     ///
@@ -491,7 +492,9 @@ impl App {
     /// Bevy plugins can be grouped into a set of plugins. Bevy provides
     /// built-in PluginGroups that provide core engine functionality.
     ///
-    /// The plugin groups available by default are [`DefaultPlugins`] and [`MinimalPlugins`].
+    /// The plugin groups available by default are
+    /// [`DefaultPlugins`](https://docs.rs/bevy/*/bevy/struct.DefaultPlugins.html)
+    /// and [`MinimalPlugins`](https://docs.rs/bevy/*/bevy/struct.MinimalPlugins.html).
     ///
     /// ## Example
     /// ```

crates/bevy_asset/src/asset_server.rs

@@ -218,7 +218,8 @@ impl AssetServer {
     /// The absolute Path to the asset is "ROOT/ASSET_FOLDER_NAME/path".
     ///
     /// By default the ROOT is the directory of the Application, but this can be overridden by
-    /// setting the `"CARGO_MANIFEST_DIR"` environment variable (see https://doc.rust-lang.org/cargo/reference/environment-variables.html)
+    /// setting the `"CARGO_MANIFEST_DIR"` environment variable
+    /// (see <https://doc.rust-lang.org/cargo/reference/environment-variables.html>)
     /// to another directory. When the application  is run through Cargo, then
     /// `"CARGO_MANIFEST_DIR"` is automatically set to the root folder of your crate (workspace).
     ///

crates/bevy_ecs/src/bundle.rs

@@ -36,10 +36,10 @@ use std::{any::TypeId, collections::HashMap};
 /// ```
 ///
 /// # Safety
-/// [Bundle::component_id] must return the ComponentId for each component type in the bundle, in the
+/// [Bundle::component_ids] must return the ComponentId for each component type in the bundle, in the
 /// _exact_ order that [Bundle::get_components] is called.
 /// [Bundle::from_components] must call `func` exactly once for each [ComponentId] returned by
-/// [Bundle::component_id]
+/// [Bundle::component_ids]
 pub unsafe trait Bundle: Send + Sync + 'static {
     /// Gets this [Bundle]'s component ids, in the order of this bundle's Components
     fn component_ids(components: &mut Components) -> Vec<ComponentId>;

crates/bevy_ecs/src/change_detection.rs

@@ -152,7 +152,7 @@ impl_debug!(ResMut<'a, T>, Component);
 
 /// Unique borrow of a non-[`Send`] resource.
 ///
-/// Only [`Send`] resources may be accessed with the [`ResMut`] [`SystemParam`]. In case that the
+/// Only [`Send`] resources may be accessed with the [`ResMut`] [`crate::system::SystemParam`]. In case that the
 /// resource does not implement `Send`, this `SystemParam` wrapper can be used. This will instruct
 /// the scheduler to instead run the system on the main thread so that it doesn't send the resource
 /// over to another thread.

crates/bevy_pbr/src/material.rs

@@ -3,7 +3,7 @@ use bevy_reflect::TypeUuid;
 use bevy_render::{color::Color, renderer::RenderResources, shader::ShaderDefs, texture::Texture};
 
 /// A material with "standard" properties used in PBR lighting
-/// Standard property values with pictures here https://google.github.io/filament/Material%20Properties.pdf
+/// Standard property values with pictures here <https://google.github.io/filament/Material%20Properties.pdf>
 #[derive(Debug, RenderResources, ShaderDefs, TypeUuid)]
 #[uuid = "dace545e-4bc6-4595-a79d-c224fc694975"]
 pub struct StandardMaterial {
@@ -59,7 +59,8 @@ impl Default for StandardMaterial {
             // This is just a default for mostly-dielectric
             metallic: 0.01,
             // Minimum real-world reflectance is 2%, most materials between 2-5%
-            // Expressed in a linear scale and equivalent to 4% reflectance see https://google.github.io/filament/Material%20Properties.pdf
+            // Expressed in a linear scale and equivalent to 4% reflectance see
+            // https://google.github.io/filament/Material%20Properties.pdf
             metallic_roughness_texture: None,
             reflectance: 0.5,
             normal_map: None,