README, add note on go-chi/httprate middleware

README.md

@@ -349,7 +349,8 @@ Please see https://github.com/go-chi for additional packages.
 | [jwtauth](https://github.com/go-chi/jwtauth)       | JWT authentication                                          |
 | [hostrouter](https://github.com/go-chi/hostrouter) | Domain/host based request routing                           |
 | [httplog](https://github.com/go-chi/httplog)       | Small but powerful structured HTTP request logging          |
-| [httptracer](https://github.com/go-chi/httptracer) | HTTP request APM tracing library                            |
+| [httprate](https://github.com/go-chi/httprate)     | HTTP request rate limiter                                   |
+| [httptracer](https://github.com/go-chi/httptracer) | HTTP request performance tracing library                    |
 | [httpvcr](https://github.com/go-chi/httpvcr)       | Write deterministic tests for external sources              |
 | [stampede](https://github.com/go-chi/stampede)     | HTTP request coalescer                                      |
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