RocketChat -> Discord (#3429)

* RocketChat -> Discord
* Add Discord Badge

Signed-off-by: Ry Jones <ry@linux.com>
Signed-off-by: Sally MacFarlane <sally.macfarlane@consensys.net>
Co-authored-by: Ry Jones <ry@linux.com>

MAINTAINERS.md

@@ -85,7 +85,7 @@ For both types of maintainers, the following steps must occur for a contributor
   - The proposed maintainer accepts the nomination and expresses a willingness
     to be a long-term (more than 6 month) committer by adding a comment in the proposal PR.
   - The PR will be communicated in all appropriate communication channels
-    including at least [Besu Rocket Chat](https://wiki.hyperledger.org/display/BESU/Rocket+Chat),
+    including at least [besu-contributors channel on Hyperledger Discord](https://discord.gg/hyperledger),
     the [mailing list](https://lists.hyperledger.org/g/besu)
     and any maintainer/community call.
 - Approval by at least 3 current maintainers within two weeks of the proposal or

README.md

@@ -5,7 +5,7 @@
  [![Documentation Status](https://readthedocs.org/projects/hyperledger-besu/badge/?version=latest)](https://besu.hyperledger.org/en/latest/?badge=latest)
  [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/3174/badge)](https://bestpractices.coreinfrastructure.org/projects/3174)
  [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/hyperledger/besu/blob/main/LICENSE)
- [![RocketChat chat](https://open.rocket.chat/images/join-chat.svg)](https://chat.hyperledger.org/channel/besu)
+ [![Discord](https://img.shields.io/discord/905194001349627914?logo=Hyperledger&style=plastic)](https://discord.gg/hyperledger)
 
 [Download](https://hyperledger.jfrog.io/artifactory/besu-binaries/besu/)
 
@@ -25,7 +25,7 @@ Besu is an Apache 2.0 licensed, MainNet compatible, Ethereum client written in J
 Besu issues are tracked [in the github issues tab][Besu Issues].
 See our [guidelines](https://wiki.hyperledger.org/display/BESU/Issues) for more details on searching and creating issues.
 
-If you have any questions, queries or comments, [RocketChat] is the place to find us.
+If you have any questions, queries or comments, [Besu channel on Hyperledger Discord] is the place to find us.
 
 
 ## Besu Users
@@ -69,5 +69,5 @@ and <a href="https://www.yourkit.com/youmonitor/">YourKit YouMonitor</a>.
 
 [Besu Issues]: https://github.com/hyperledger/besu/issues
 [Besu User Documentation]: https://besu.hyperledger.org
-[RocketChat]: https://chat.hyperledger.org/
+[Besu channel on Hyperledger Discord]: https://discord.gg/hyperledger
 [Contributing Guidelines]: CONTRIBUTING.md

SUPPORT.md

@@ -2,17 +2,17 @@
 
 Welcome to the Besu repository! The following links are a set of guidelines for contributing to this repo and its packages. These are mostly guidelines, not rules. Use your best judgement, and feel free to propose changes to this document in a pull request. Contributions come in the form of code submissions, writing documentation, raising issues, helping others in chat, and any other actions that help develop Besu.
 
-### LF/Github Accounts
+### Github/Discord/LF Accounts
 
-Having Linux Foundation and Github accounts is necessary for obtaining support for Besu through the rocket chat, wiki and issue management.  
+Having Github, Discord, and Linux Foundation accounts is necessary for obtaining support for Besu through the community channels, wiki and issue management.  
 * If you want to raise an issue, you can do so [on the github issue tab](https://github.com/hyperledger/besu/issues).   
-* Our Rocket Chat requires a [Linux Foundation (LF) account].
+* Hyperledger Discord requires a [Discord account].
 * The Hyperlegder wiki also requires a [Linux Foundation (LF) account] in order to edit pages.
 
 ### Useful support links
 
 * [Besu User Documentation]
-* [RocketChat]
+* [Besu channel on Hyperledger Discord]
 * [I just have a quick question](https://wiki.hyperledger.org/display/BESU/I+just+have+a+quick+question)
 * [Did you find a bug?](https://wiki.hyperledger.org/display/BESU/Reporting+Bugs)
 * [Issues](https://wiki.hyperledger.org/display/BESU/Issues)
@@ -20,5 +20,5 @@ Having Linux Foundation and Github accounts is necessary for obtaining support f
 
 
 [Besu User Documentation]: https://besu.hyperledger.org
-[RocketChat]: https://chat.hyperledger.org/
-[Contributing Guidelines]: CONTRIBUTING.md
+[Besu channel on Hyperledger Discord]: https://discord.gg/hyperledger
+[Contributing Guidelines]: CONTRIBUTING.md