Tweak docs

Co-Authored-By: Liam Murphy <[email protected]>

Author: daxpedda

guide/src/SUMMARY.md

@@ -85,6 +85,7 @@
       - [`skip`](./reference/attributes/on-rust-exports/skip.md)
       - [`skip_jsdoc`](./reference/attributes/on-rust-exports/skip_jsdoc.md)
       - [`start`](./reference/attributes/on-rust-exports/start.md)
+      - [`main`](./reference/attributes/on-rust-exports/main.md)
       - [`typescript_custom_section`](./reference/attributes/on-rust-exports/typescript_custom_section.md)
       - [`getter` and `setter`](./reference/attributes/on-rust-exports/getter-and-setter.md)
       - [`inspectable`](./reference/attributes/on-rust-exports/inspectable.md)

guide/src/reference/attributes/on-rust-exports/main.md

@@ -20,14 +20,14 @@ async fn main() {
 }
 ```
 
-This attribute is intended to be used on the `main` function of binaries or
-examples only. Unlike `#[wasm_bindgen(start)]`, it will not cause a function to
-be executed on start in a library.
+This attribute is only intended to be used on the `main` function of binaries or
+examples. Unlike `#[wasm_bindgen(start)]`, it will not cause an arbitrary
+function to be executed on start in a library.
 
 The return type support is modeled after [`Termination`]. `()` and `Infallible`
 are supported, but [`Termination`] itself is not. In order, wasm-bindgen will
 first detect a `Result<(), impl Into<JsValue>>` and will throw proper
 `JsValue`s, `Result<(), impl Debug>` will convert an error to a string and throw
 that.
 
-[`termination`]: https://doc.rust-lang.org/std/process/trait.Termination.html
+[`Termination`]: https://doc.rust-lang.org/std/process/trait.Termination.html