fix(cli): Use lowercase 'openneuro' for local remote names

[nellh]

This is easier to type than 'OpenNeuro' when using this on the command line.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 46.85%. Comparing base (794f576) to head (b0564fd).
Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
cli/src/worker/git.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3282      +/-   ##
==========================================
- Coverage   46.85%   46.85%   -0.01%     
==========================================
  Files         610      610              
  Lines       39102    39111       +9     
  Branches     1254     1255       +1     
==========================================
+ Hits        18321    18325       +4     
- Misses      20585    20590       +5     
  Partials      196      196              

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