enable_feature_flag CLI: Fix typo in usage message

Author: the-mikedavis

deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/enable_feature_flag_command.ex

@@ -25,7 +25,7 @@ defmodule RabbitMQ.CLI.Ctl.Commands.EnableFeatureFlagCommand do
   def run(["all"], %{node: node_name, experimental: experimental}) do
     case experimental do
       true ->
-        {:error, RabbitMQ.CLI.Core.ExitCodes.exit_usage(), "`--experiemntal` flag is not allowed when enabling all feature flags.\nUse --experimental with a specific feature flag if you want to enable an experimental feature."}
+        {:error, RabbitMQ.CLI.Core.ExitCodes.exit_usage(), "`--experimental` flag is not allowed when enabling all feature flags.\nUse --experimental with a specific feature flag if you want to enable an experimental feature."}
       false ->
         case :rabbit_misc.rpc_call(node_name, :rabbit_feature_flags, :enable_all, []) do
           {:badrpc, _} = err -> err