chore: update hyper example readme

examples/hyper/README.md

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+# Hyper
+
+This example shows how you can use itconfig with hyper server.
+
+Example was taken from the [official hyper example].
+
+[official hyper example]: https://github.com/hyperium/hyper/blob/master/examples/web_api.rs
+
+### Usage
+
+```bash
+cd examples/hyper
+
+cargo run
+```
+
+
+