Multiple broken (404) links in the documentation

[fbitti]

Hi everyone, I'd like to report all the following links are broken. I'd love to submit a pull request with the fixes myself, however, I don't manage to find the alternative pages that contain the desired info.

Linked from: https://rustwasm.github.io/docs/wasm-pack/print.html URLs:

• https://rustwasm.github.io/docs/prerequisites/index.html
• https://rustwasm.github.io/docs/wasm-pack/src-utils-rs.html
• https://rustwasm.github.io/docs/wasm-pack/npm.html
• https://rustwasm.github.io/docs/wasm-pack/src-lib-rs.html
• https://rustwasm.github.io/docs/wasm-pack/cargo-toml.html
• https://rustwasm.github.io/docs/wasm-pack/npm-browser-packages/index.html
• https://rustwasm.github.io/docs/wasm-pack/non-rustup-setups.html
• https://rustwasm.github.io/docs/wasm-pack/pack-and-publish.html
• https://rustwasm.github.io/docs/wasm-pack/tests-web-rs.html
• https://rustwasm.github.io/docs/wasm-pack/hybrid-applications-with-webpack/index.html
• https://rustwasm.github.io/docs/template-deep-dive/index.html
• https://rustwasm.github.io/docs/wasm-pack/wee_alloc.html
• https://rustwasm.github.io/docs/wasm-pack/build.html
• https://rustwasm.github.io/docs/getting-started.html
• https://rustwasm.github.io/docs/wasm-pack/getting-started/manual-setup.html

Linked from: https://rustwasm.github.io/docs/wasm-bindgen/reference/accessing-properties-of-untyped-js-values.html URLs:

• https://rustwasm.github.io/wasm-bindgen/api/js_sys/struct.Reflect.html
• https://rustwasm.github.io/wasm-bindgen/api/js_sys/struct.Reflect.html#method.get
• https://rustwasm.github.io/wasm-bindgen/api/js_sys/struct.Reflect.html#method.has
• https://rustwasm.github.io/wasm-bindgen/api/js_sys/struct.Reflect.html#method.set

Linked from: https://rustwasm.github.io/docs/wasm-bindgen/examples/websockets.html URL: https://rustwasm.github.io/wasm-bindgen/exbuild/websockets/

Linked from: https://rustwasm.github.io/docs/wasm-bindgen/reference/attributes/on-rust-exports/js_name.html URL: https://rustwasm.github.io/wasm-bindgen/reference/attributes/on-rust-exports/js_class.html

Linked from: https://rustwasm.github.io/docs/wasm-pack/tutorials/npm-browser-packages/index.html URL: https://rustwasm.github.io/docs/prerequisites/index.html

Happy 2020!