Fix README link
Fixes link pointing to archived version of `clap_generate`.
@@ -113,7 +113,7 @@ Below are a few of the features which `clap` supports, full descriptions and usa
* **Auto-generated Help, Version, and Usage information**
- Can optionally be fully, or partially overridden if you want a custom help, version, or usage statements
* **Auto-generated completion scripts (Bash, Zsh, Fish, Elvish and PowerShell)**
- - Using [`clap_generate`](https://github.com/clap-rs/clap_generate)
+ - Using [`clap_generate`](https://github.com/clap-rs/clap/tree/master/clap_generate)
- Even works through many multiple levels of subcommands
- Works with options which only accept certain values
- Works with subcommand aliases
