rename Hyperledger Besu to Besu (#7639)

Signed-off-by: Sally MacFarlane <macfarla.github@gmail.com>

MAINTAINERS.md

@@ -82,7 +82,7 @@ The following steps must occur for a contributor to be "upgraded" as a maintaine
   - 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-contributors channel on Hyperledger Discord](https://discord.gg/hyperledger),
+    including at least [besu-contributors channel on 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

SUPPORT.md

@@ -1,4 +1,4 @@
-# Hyperledger Besu Support
+# Besu Support
 
 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.
 
@@ -6,13 +6,13 @@ Welcome to the Besu repository! The following links are a set of guidelines for
 
 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).   
-* Hyperledger Discord requires a [Discord account].
-* The Hyperledger wiki also requires a [Linux Foundation (LF) account] in order to edit pages.
+* Discord requires a [Discord account].
+* The Besu wiki also requires a [Linux Foundation (LF) account] in order to edit pages.
 
 ### Useful support links
 
 * [Besu User Documentation]
-* [Besu channel on Hyperledger Discord]
+* [Besu channel on 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 Github, Discord, and Linux Foundation accounts is necessary for obtaining
 
 
 [Besu User Documentation]: https://besu.hyperledger.org
-[Besu channel on Hyperledger Discord]: https://discord.gg/hyperledger
+[Besu channel on Discord]: https://discord.gg/hyperledger
 [Contributing Guidelines]: CONTRIBUTING.md