Update README.md to reflect native->runtime rename

Author: rs017991

runtime/README.md

@@ -1,12 +1,12 @@
 # `iced_runtime`
-[![Documentation](https://docs.rs/iced_native/badge.svg)][documentation]
-[![Crates.io](https://img.shields.io/crates/v/iced_native.svg)](https://crates.io/crates/iced_native)
-[![License](https://img.shields.io/crates/l/iced_native.svg)](https://github.com/iced-rs/iced/blob/master/LICENSE)
+[![Documentation](https://docs.rs/iced_runtime/badge.svg)][documentation]
+[![Crates.io](https://img.shields.io/crates/v/iced_runtime.svg)](https://crates.io/crates/iced_runtime)
+[![License](https://img.shields.io/crates/l/iced_runtime.svg)](https://github.com/iced-rs/iced/blob/master/LICENSE)
 [![Discord Server](https://img.shields.io/discord/628993209984614400?label=&labelColor=6A7EC2&logo=discord&logoColor=ffffff&color=7389D8)](https://discord.gg/3xZJ65GAhd)
 
-`iced_runtime` takes [`iced_core`] and builds a native runtime on top of it.
+`iced_runtime` takes [`iced_core`] and builds a runtime on top of it.
 
-[documentation]: https://docs.rs/iced_native
+[documentation]: https://docs.rs/iced_runtime
 [`iced_core`]: ../core
 [`iced_winit`]: ../winit
 [`druid`]: https://github.com/xi-editor/druid