docs(portal-loop): mention packages can be deployed permissionlessly

[grepsuzette]

Referencing #2744

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.21%. Comparing base (701ac17) to head (4ff07ea).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2747      +/-   ##
==========================================
- Coverage   60.21%   60.21%   -0.01%     
==========================================
  Files         562      562              
  Lines       75038    75038              
==========================================
- Hits        45185    45182       -3     
- Misses      26476    26479       +3     
  Partials     3377     3377              

Flag	Coverage Δ
contribs/gnodev	61.40% <ø> (ø)
contribs/gnofaucet	14.46% <ø> (ø)
gno.land	64.57% <ø> (ø)
gnovm	64.33% <ø> (ø)
misc/genstd	80.54% <ø> (ø)
misc/logos	20.23% <ø> (ø)
tm2	62.04% <ø> (+0.02%)	⬆️

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[leohhhn]

I think this is needed, just in more broader terms. Please see my comment.

[leohhhn]

Let's merge this and iterate.