Correct a syntax block for 4.0.x and 3.13.x versions #2108

Author: michaelklishin

versioned_docs/version-3.13/install-homebrew.md

@@ -123,7 +123,7 @@ or CLI tools directly:
 
 ```bash
 /opt/homebrew/sbin/rabbitmqctl shutdown
-```bash
+```
 
 The command will wait for the node process to stop. If the target node is not running,
 it will exit with a warning.

versioned_docs/version-4.0/install-homebrew.md

@@ -123,7 +123,7 @@ or CLI tools directly:
 
 ```bash
 /opt/homebrew/sbin/rabbitmqctl shutdown
-```bash
+```
 
 The command will wait for the node process to stop. If the target node is not running,
 it will exit with a warning.