Add missing link to meta topic in README (#9)

Add missing link to meta topic in README (#9)

diff --git a/README.md b/README.md
index fd05500..acee6e7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 ## Discourse footnotes plugin
 
+https://meta.discourse.org/t/discourse-footnote/84533
+
 Official footnotes Discourse plugin
 
 Based off: [github.com/markdown-it/markdown-it-footnote](https://github.com/markdown-it/markdown-it-footnote)

GitHub sha: f15da0a9

This commit appears in #9 which was approved by CvX. It was merged by CvX.