Update datatransfer.md -- fixed link for cli transfer

[silviamazzoni]

the original link was sending you to the globus cli guide instead of the basic cli commands

[silviamazzoni]

@susanunit @wesleyboar this is a trivial but significant fix. i almost went down the wrong path

[wesleyboar]

Please disregard my having changing (and reverted) reviewers.¹

Thank you @silviamazzoni. Looks right to me, but I'll ask internally for verification.

Footnotes

1. If you must know… I had thought this doc was in "Data Depot Repository" (which is undergoing refactor) — so I called the appropriate staff for that — but this changed doc is not part of that work. ↩

[wesleyboar]

Actually, after looking again, especially at the context of the links, I see this change is obviously correct. Merged. Thanks again.