fix: Clarify crane install steps

[okozachenko1203]

No description provided.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[codecov-commenter]

Codecov Report

Merging #1532 (8457d2f) into main (da1008f) will decrease coverage by 0.31%.
The diff coverage is 52.70%.

@@            Coverage Diff             @@
##             main    #1532      +/-   ##
==========================================
- Coverage   73.07%   72.77%   -0.31%     
==========================================
  Files         117      118       +1     
  Lines        9082     9230     +148     
==========================================
+ Hits         6637     6717      +80     
- Misses       1780     1829      +49     
- Partials      665      684      +19     

Impacted Files	Coverage Δ
pkg/v1/manifest.go	100.00% <ø> (ø)
pkg/v1/remote/delete.go	58.62% <ø> (ø)
pkg/v1/mutate/mutate.go	69.01% <10.52%> (-3.80%)	⬇️
pkg/v1/remote/referrers.go	40.00% <40.00%> (ø)
pkg/v1/remote/write.go	63.12% <55.95%> (-0.99%)	⬇️
pkg/v1/remote/descriptor.go	73.84% <61.53%> (-0.44%)	⬇️
pkg/v1/mutate/image.go	69.56% <100.00%> (+0.33%)	⬆️
pkg/v1/mutate/index.go	79.33% <100.00%> (+0.34%)	⬆️
pkg/v1/remote/options.go	77.77% <100.00%> (+1.41%)	⬆️
... and 2 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[imjasonh]

You'll also need to sign the Google CLA.

[okozachenko1203]

You'll also need to sign the Google CLA.

ok, signed