fix discord links (#425)

Author: NicolasMassart

common

@@ -16,4 +16,4 @@ You can [run the beacon node only](../HowTo/Get-Started/Run-Teku.md#start-the-be
 [run the beacon node and validator client](../HowTo/Get-Started/Run-Teku.md#start-the-clients-in-a-single-process).
 
 Read more about the [Ethereum consensus client architecture](https://ethereum.org/en/developers/docs/nodes-and-clients/).
-For more information about the Teku architecture, contact us on [Teku Discord channel](https://discord.gg/9mCVSY6).
+For more information about the Teku architecture, contact us on [Teku Discord channel](https://discord.com/invite/consensys).

docs/Concepts/ArchitectureOverview.md

@@ -109,4 +109,4 @@ sync and validating within minutes.
 [prune mode]: ../Reference/CLI/CLI-Syntax.md#data-storage-mode
 [archive mode]: ../Reference/CLI/CLI-Syntax.md#data-storage-mode
 [supply the finalized checkpoint state]: Get-Started/Checkpoint-Start.md
-[Teku Discord channel]: https://discord.gg/9mCVSY6
+[Teku Discord channel]: https://discord.com/invite/consensys

docs/HowTo/Migrate-Database.md

@@ -101,5 +101,5 @@ You can follow Teku notifications by:
 - Signing up to the [release announcements](https://pages.consensys.net/teku-sign-up) email list (release and important
   announcements only, no marketing).
 - Following Teku on [Twitter](https://twitter.com/Teku_ConsenSys).
-- Following the Teku channel in the ConsenSys [Discord](https://discord.gg/7hPv2T6).
+- Following the Teku channel in the ConsenSys [Discord](https://discord.com/invite/consensys).
 - Subscribing to release notifications on GitHub for [Teku](https://github.com/ConsenSys/teku).

docs/HowTo/Prepare-for-The-Merge.md

@@ -2,7 +2,7 @@
 
 ## What is Teku?
 
-Teku is an open-source Ethereum consensus client (previously called an
+Teku is an open source Ethereum consensus client (previously called an
 [Ethereum 2.0](https://blog.ethereum.org/2022/01/24/the-great-eth2-renaming/) client) written in Java.
 Teku contains a full beacon node implementation and a validator client for participating in
 [proof of stake consensus](Concepts/Proof-of-Stake.md).

docs/index.md

@@ -25,7 +25,7 @@ extra:
     You can switch to the stable version using the version box at the bottom of the screen.'
   support:
     tool: Discord
-    channel: https://discord.gg/9mCVSY6
+    channel: https://discord.com/invite/consensys
     website: https://consensys.net/knowledge-base/ethereum-2/teku
     company: Consensys
     issues: https://github.com/Consensys/teku/issues
@@ -95,7 +95,7 @@ nav:
         - Slashing protection: Concepts/Slashing-Protection.md
         - Weak subjectivity: Concepts/Weak-Subjectivity.md
     - Tutorials:
-        - External signer TLS: Tutorials/Configure-External-Signer-TLS.md  
+        - External signer TLS: Tutorials/Configure-External-Signer-TLS.md
     - Reference:
         - Teku command line:
           - Options: Reference/CLI/CLI-Syntax.md