docs: add minikube tunnel command in the tutorial

[dapeleg-dn]

Description
Added minikube tunnel command to the tutorial. Without it, you can not access localhost:3000 because the service of type LoadBalancer is stuck in pending state.

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[conventional-commit-lint-gcf]

🤖 I detect that the PR title and the commit message differ and there's only one commit. To use the PR title for the commit history, you can use Github's automerge feature with squashing, or use automerge label. Good luck human!

-- conventional-commit-lint bot
https://conventionalcommits.org/

[codecov]

Codecov Report

Merging #8490 (5c48247) into main (290280e) will decrease coverage by 5.30%.
The diff coverage is 55.02%.

@@            Coverage Diff             @@
##             main    #8490      +/-   ##
==========================================
- Coverage   70.48%   65.18%   -5.30%     
==========================================
  Files         515      602      +87     
  Lines       23150    29912    +6762     
==========================================
+ Hits        16317    19498    +3181     
- Misses       5776     8942    +3166     
- Partials     1057     1472     +415     

Impacted Files	Coverage Δ
cmd/skaffold/app/cmd/completion.go	13.04% <0.00%> (-1.25%)	⬇️
cmd/skaffold/app/cmd/config/list.go	65.21% <ø> (ø)
cmd/skaffold/app/cmd/config/set.go	88.72% <ø> (ø)
cmd/skaffold/app/cmd/config/util.go	54.28% <ø> (ø)
cmd/skaffold/app/cmd/credits.go	100.00% <ø> (ø)
cmd/skaffold/app/cmd/credits/export.go	0.00% <0.00%> (ø)
cmd/skaffold/app/cmd/deploy.go	40.90% <0.00%> (-12.94%)	⬇️
cmd/skaffold/app/cmd/generate_pipeline.go	60.00% <ø> (ø)
cmd/skaffold/app/cmd/inspect_modules.go	65.00% <ø> (ø)
cmd/skaffold/app/cmd/inspect_profiles.go	66.66% <ø> (ø)
... and 426 more

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