docs: Fix document tutorials/skaffold-resource-selector.md

[yosukei3108]

Fixes: N/A
Related: N/A
Merge before/after: N/A

Description

Tweak markdown decorations and make some fixes in tutorials/skaffold-resource-selector.md.

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[codecov]

Codecov Report

Merging #9083 (bca59b3) into main (290280e) will decrease coverage by 7.14%.
Report is 1031 commits behind head on main.
The diff coverage is 49.04%.

@@            Coverage Diff             @@
##             main    #9083      +/-   ##
==========================================
- Coverage   70.48%   63.34%   -7.14%     
==========================================
  Files         515      626     +111     
  Lines       23150    32188    +9038     
==========================================
+ Hits        16317    20390    +4073     
- Misses       5776    10253    +4477     
- Partials     1057     1545     +488     

Files Changed	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% <0.00%> (ø)
cmd/skaffold/app/cmd/inspect_profiles.go	66.66% <0.00%> (ø)
... and 40 more

... and 429 files with indirect coverage changes

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[yosukei3108]

@ericzzzzzzz Thanks for the review!