Mark anchor positioning as obsolete (#607)

Point to the official CSSWG Editor's Draft, per #606.

CSSAnchoredPositioning/explainer.md

@@ -14,9 +14,9 @@ The anchored positioning scheme proposed here is influenced by Ian Kilpatrick an
 ## Status of this Document
 This document is a starting point for engaging the community and standards bodies in developing collaborative solutions fit for standardization. As the solutions to problems described in this document progress along the standards-track, we will retain this document as an archive and use this section to keep the community up-to-date with the most current standards venue and content location of future work and discussions.
 
-* This document status: **Active**
-* Expected venue: [Open UI Community Group](https://www.w3.org/community/open-ui/) and [CSS Working Group](https://www.w3.org/Style/CSS/)
-* **Current version: this document**
+* This document status: **Obsolete**
+* Current venue: [W3C CSS Working Group](https://www.w3.org/Style/CSS/) | [w3c/csswg-drafts](https://github.com/w3c/csswg-drafts)
+* **Current version: [CSS Anchor Positioning](https://drafts.csswg.org/css-anchor-1/)
 
 ## Introduction
 

README.md

@@ -60,7 +60,6 @@ we move them into the [Alumni section](#alumni-) below.
     <a href="https://github.com/MicrosoftEdge/MSEdgeExplainers/labels/CSSColorMix">
     ![GitHub issues by-label](https://img.shields.io/github/issues/MicrosoftEdge/MSEdgeExplainers/CSSColorMix?label=issues)</a> |
     [New issue...](https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/new?assignees=kbabbitt&labels=CSSColorMix&template=css-color-mix---function.md&title=%5BCSS+color-mix+function%5D+%3CTITLE+HERE%3E)
-* [CSS Anchored Positioning](CSSAnchoredPositioning/explainer.md) | <a href="https://github.com/MicrosoftEdge/MSEdgeExplainers/labels/CSS%20Anchored%20Positioning">
     ![GitHub issues by-label](https://img.shields.io/github/issues/MicrosoftEdge/MSEdgeExplainers/CSS%20Anchored%20Positioning?label=issues)</a> |
     [New issue...](https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/new?assignees=melanierichards%2C+BoCupp-Microsoft%2C+ipopescu93%2C+dandclark&labels=CSS+Anchored+Positioning&template=css-anchored-positioning.md&title=%5BCSS+Anchored+Positioning%5D+%3CTITLE+HERE%3E)
 
@@ -208,6 +207,7 @@ standards communities. Thanks for your continued interest!
 
 | Current Explainer | Current Venue | Archive link and date |
 |---|---|---|
+| [CSS Anchored Positioning](https://drafts.csswg.org/css-anchor-1/) | [W3C CSS Working Group](https://www.w3.org/Style/CSS/) | 2022-10-30 |
 | [PARAKEET with Noisy Ranking](https://github.com/WICG/privacy-preserving-ads/blob/main/NoisyRanking.md) | [Web Incubator Community Group](https://wicg.io/) | 2022-04-19 |
 | [focusgroup for HTML and CSS](https://open-ui.org/components/focusgroup.explainer) | [Open UI Community Group](https://www.w3.org/community/open-ui/) | [2022-04-09](Focusgroup/explainer.md) |
 | [Web App Link Handling Manifest Options](https://github.com/WICG/pwa-url-handler/blob/main/handle_links/explainer.md) | [Web Incubator Community Group](https://wicg.io/) | 2021-09-28 |