CLI references the wrong binary name

[KasonBraley]

The output from rpk connect --help references redpanda-connect as the command to run, I think it's supposed to be rpk connect.

~/n/benthos> rpk connect --help
NAME:
   redpanda-connect - A stream processor for mundane tasks - https://docs.redpanda.com/redpanda-connect

USAGE:
   redpanda-connect [global options] command [command options] 

DESCRIPTION:
   Either run Redpanda Connect as a stream processor or choose a command:

     redpanda-connect list inputs
     redpanda-connect create kafka//file > ./config.yaml
     redpanda-connect -c ./config.yaml
     redpanda-connect -r "./production/*.yaml" -c ./config.yaml

COMMANDS:
   echo      Parse a config file and echo back a normalised version
   lint      Parse Redpanda Connect configs and report any linting errors
   run       Run Redpanda Connect in normal mode against a specified config file
   streams   Run Redpanda Connect in streams mode
   list      List all Redpanda Connect component types
   create    Create a new Redpanda Connect config
   test      Execute Redpanda Connect unit tests
   template  Interact and generate Redpanda Connect templates
   blobl     Execute a Redpanda Connect mapping on documents consumed via stdin
   studio    Interact with Benthos studio (https://studio.benthos.dev)
   help, h   Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --version, -v                                                                                                                    display version info, then exit (default: false)
   --config value, -c value                                                                                                         a path to a configuration file
   --log.level value                                                                                                                override the configured log level, options are: off, error, warn, info, debug, trace
   --set "metrics.type=prometheus", -s "metrics.type=prometheus" [ --set "metrics.type=prometheus", -s "metrics.type=prometheus" ]  set a field (identified by a dot path) in the main configuration file, e.g. "metrics.type=promethe
us"
   --resources value, -r value [ --resources value, -r value ]                                                                      pull in extra resources from a file, which can be referenced the same as resources defined in the 
main config, supports glob patterns (requires quotes)
   --chilled                                                                                                                        continue to execute a config containing linter errors (default: false)
   --watcher, -w                                                                                                                    EXPERIMENTAL: watch config files for changes and automatically apply them (default: false)
   --env-file value, -e value [ --env-file value, -e value ]                                                                        import environment variables from a dotenv file
   --templates value, -t value [ --templates value, -t value ]                                                                      EXPERIMENTAL: import Redpanda Connect templates, supports glob patterns (requires quotes)
   --help, -h