Update slack link

Relequestual · web-flow · commit ed7815e541e8 · 2023-07-11T11:46:13.000+01:00
Fixes json-schema-org/blog#34 Should not expire. Is limited to 400 uses per slack requirements.
diff --git a/slack.md b/slack.md
@@ -1,3 +1,3 @@
 ---
-redirect_to: https://join.slack.com/t/json-schema/shared_invite/zt-1tc77c02b-z~UiKXqpM2gHchClKbUoXw
+redirect_to: https://join.slack.com/t/json-schema/shared_invite/zt-1ywpdj4yd-bXiBLjYEbKWUjzon0qiY9Q
 ---

-Original file line number
+Diff line change
@@ @@ -1,3 +1,3 @@ @@
 ---
 -redirect_to: https://join.slack.com/t/json-schema/shared_invite/zt-1tc77c02b-z~UiKXqpM2gHchClKbUoXw
 +redirect_to: https://join.slack.com/t/json-schema/shared_invite/zt-1ywpdj4yd-bXiBLjYEbKWUjzon0qiY9Q
 ---