Add links to documentation and re-use code samples

[fiskus]

• Changelog entry (skip if change is not significant to end users, e.g. docs only)

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• To see the specific tasks where the Asana app for GitHub is being used, see below:
  • https://app.asana.com/0/0/1202880605767757

[codecov]

Codecov Report

Merging #3496 (4c77de5) into master (e1f0c5e) will decrease coverage by 0.06%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #3496      +/-   ##
==========================================
- Coverage   36.10%   36.04%   -0.06%     
==========================================
  Files         686      689       +3     
  Lines       29976    30020      +44     
  Branches     4418     4415       -3     
==========================================
  Hits        10822    10822              
- Misses      17982    18029      +47     
+ Partials     1172     1169       -3     

Flag	Coverage Δ
api-python	91.35% <ø> (ø)
catalog	10.15% <0.00%> (-0.03%)	⬇️
lambda	86.03% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
catalog/app/containers/Bucket/CodeSamples/Code.tsx	0.00% <0.00%> (ø)
catalog/app/containers/Bucket/CodeSamples/Dir.tsx	0.00% <0.00%> (ø)
catalog/app/containers/Bucket/CodeSamples/File.tsx	0.00% <0.00%> (ø)
...alog/app/containers/Bucket/CodeSamples/Package.tsx	0.00% <0.00%> (ø)
catalog/app/containers/Bucket/Dir.tsx	0.00% <0.00%> (ø)
catalog/app/containers/Bucket/File.js	0.00% <0.00%> (ø)
.../app/containers/Bucket/PackageTree/PackageTree.tsx	0.00% <0.00%> (ø)
catalog/app/embed/Dir.js	0.00% <0.00%> (ø)
catalog/app/embed/File.js	0.00% <0.00%> (ø)

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[fiskus]

Sorry, one small fix: removed --recursive for aws cp file code sample