Update CONTRIBUTING.md

Author: mnot

CONTRIBUTING.md

@@ -5,7 +5,7 @@ description: How to participate in the HTTP Working Group
 
 Anyone can contribute to HTTP; you don't have to join the Working Group, because there is no "membership" -- anyone who participates in the work, as outlined below, is part of the HTTP Working Group.
 
-Before doing so, it's a good idea to familiarize yourself with our [charter](https://datatracker.ietf.org/wg/httpbis/about/) and [home page](https://httpwg.org/). If you're new to the [IETF](https://www.ietf.org/), you may also want to read [an informal guide to the IETF process](https://www.ietf.org/standards/process/informal/) and the [Tao of the IETF](https://www.ietf.org/tao.html).
+Before doing so, it's a good idea to familiarize yourself with our [charter](https://datatracker.ietf.org/wg/httpbis/about/) and [home page](https://httpwg.org/). If you're new to the [IETF](https://www.ietf.org/), you may also want to read [Getting Started the IETF](https://www.ietf.org/participate/get-started/) and [an informal guide to the IETF process](https://www.ietf.org/process/informal/).
 
 **Be aware that all contributions fall under the "NOTE WELL" terms outlined below.**
 
@@ -145,4 +145,4 @@ Definitive information is in the documents listed below and other IETF BCPs. For
 - [BCP 54](https://www.rfc-editor.org/info/bcp54) (Code of Conduct)
 - [BCP 78](https://www.rfc-editor.org/info/bcp78) (Copyright)
 - [BCP 79](https://www.rfc-editor.org/info/bcp79) (Patents, Participation)
-- [https://www.ietf.org/privacy-policy/](https://www.ietf.org/privacy-policy/) (Privacy Policy)
+- [https://www.ietf.org/privacy-policy/](https://www.ietf.org/privacy-policy/) (Privacy Policy)