Update pmtiles upload --help

[zstadler]

pmtiles upload --help has <key> as the second parameter, yet it seems that this is the remote name, as the docs say.

The help text is:

Usage: pmtiles upload --bucket=STRING <input> <key>

Upload a local archive to remote storage.

Arguments:
  <input>
  <key>

Flags:
  -h, --help                 Show context-sensitive help.

      --max-concurrency=2    # of upload threads
      --bucket=STRING        Bucket to upload to.

Perhaps the help could use the term <remote> instead of <key>.

[bdon]

It is the name of the key in the remote target bucket, maybe remote_key?

[zstadler]

I find the word "key" confusing, especially given the need to set the access and secret access keys.

IMO, the docs are much more clear, as the use the terms "INPUT" and "REMOTE":

upload

Upload an archive to cloud storage.

# requires environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY credentials
pmtiles upload INPUT.pmtiles REMOTE.pmtiles --bucket=s3://BUCKET_NAME

[bdon]

Good point, I didn't think of that conflict between the access key and the object key. what about object_name?