Change complex params to updated casing

Also fixed bad url link.
Remove part about put-object using multipart

This is not true, only the "s3" commands do this,
not s3api.
Change s3 to s3api

These are all for the low level s3api commands.
Merge branch 'example-fixups' into develop

* example-fixups:
  Change s3 to s3api
  Remove part about put-object using multipart
  Change complex params to updated casing