[accordion] Link to all github discussions. (#953)

site/src/pages/components/accordion.explainer.mdx

@@ -7,9 +7,15 @@ layout: ../../layouts/ComponentLayout.astro
 ---
 
 - [@dbaron](https://github.com/dbaron)
-- Last updated: September 11, 2023
-- Feedback: https://github.com/openui/open-ui/issues/725
-- HTML specification pull request: https://github.com/whatwg/html/pull/9400
+- Last updated: November 16, 2023
+- Github discussions:
+  - [openui/open-ui#725](https://github.com/openui/open-ui/issues/725) (Proposal for Exclusive Accordions)
+  - [openui/open-ui#778](https://github.com/openui/open-ui/issues/778) (how valuable is having working exclusivity in subtrees not connected to a document)
+  - [openui/open-ui#786](https://github.com/openui/open-ui/issues/786) (exclusively non-exclusive...)
+  - [openui/open-ui#812](https://github.com/openui/open-ui/issues/812) (developer poll on behavior of exclusive accordion)
+  - [openui/open-ui#925](https://github.com/openui/open-ui/issues/925) (UA ability for user to over-ride exclusive accordions functionality)
+  - [w3c/html-aam#509](https://github.com/w3c/html-aam/issues/509) (describe grouping (and naming of the group) for exclusive accordions `<details name>`)
+  - PR [whatwg/html#9400](https://github.com/whatwg/html/pull/9400) (Add name attribute for grouping details elements into an exclusive accordion)
 
 {/* START doctoc generated TOC please keep comment here to allow auto update */}
 {/* DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE */}