docs: update test phase references

[gsquared94]

Fixes: #6476

[codecov]

Codecov Report

Merging #6539 (1385512) into main (cfe7882) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #6539   +/-   ##
=======================================
  Coverage   70.44%   70.44%           
=======================================
  Files         515      515           
  Lines       23144    23144           
=======================================
  Hits        16303    16303           
+ Misses       5785     5783    -2     
- Partials     1056     1058    +2     

Impacted Files	Coverage Δ
pkg/skaffold/util/tar.go	63.21% <0.00%> (-2.30%)	⬇️
pkg/skaffold/docker/image.go	65.56% <0.00%> (-1.00%)	⬇️
pkg/skaffold/docker/parse.go	88.23% <0.00%> (+0.84%)	⬆️
pkg/skaffold/log/stream/stream.go	85.71% <0.00%> (+14.28%)	⬆️

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[MarlonGamez]

lgtm ✅