docs: Update documentation

[briantopping]

Description
Update template documentation with a better introduction to their use of Go template library

[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 #9017 (8061ea4) into main (290280e) will decrease coverage by 6.84%.
Report is 996 commits behind head on main.
The diff coverage is 49.80%.

@@            Coverage Diff             @@
##             main    #9017      +/-   ##
==========================================
- Coverage   70.48%   63.64%   -6.84%     
==========================================
  Files         515      624     +109     
  Lines       23150    31926    +8776     
==========================================
+ Hits        16317    20319    +4002     
- Misses       5776    10079    +4303     
- Partials     1057     1528     +471     

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

... and 415 files with indirect coverage changes

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