chore: make it clear the link is not ready yet

Author: ovflowd

apps/site/pages/en/about/get-involved/index.md

@@ -9,7 +9,7 @@ If you are interested in getting involved with the Node.js community, there are
 
 ## Community Discussion
 
-- The [Node.js official Discord server](https://discord.gg/nodejs) is a place to chat with other Node.js developers and getting official news from the Node.js project.
+- The [Node.js official Discord server](https://discord.gg/REPLACEME) is a place to chat with other Node.js developers and getting official news from the Node.js project.
 - The [GitHub issues list](https://github.com/nodejs/node/issues) is the place for discussion of Node.js core features and if you have questions about Node.js, you can use the [github discussions](https://github.com/orgs/nodejs/discussions).
 - The [`nodejs/help`](https://github.com/nodejs/help/issues) repository is the place to ask questions about Node.js.
 - The official Node.js Twitter account is [nodejs](https://twitter.com/nodejs).

apps/site/pages/en/blog/announcements/official-discord-launch-announcement.md

@@ -31,7 +31,7 @@ For all intents and purposes, this is an official Node.js space, and we are eage
 
 ### How to Join
 
-Joining the Node.js Discord server is easy! Simply visit [https://discord.gg/nodejs](https://discord.gg/nodejs) and become part of our growing community. We can't wait to see you there!
+Joining the Node.js Discord server is easy! Simply visit [https://discord.gg/REPLACEME](https://discord.gg/REPLACEME) and become part of our growing community. We can't wait to see you there!
 
 ### Looking Ahead