Slight improvement of the sketch tutorial

[adam-urbanczyk]

Mention modes explicitly

[adam-urbanczyk]

@Jojain what do you think? Is it clear(er)?

[codecov]

Codecov Report

Merging #921 (042bb09) into master (cd0c81e) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 042bb09 differs from pull request most recent head e7bc699. Consider uploading reports for the commit e7bc699 to get more accurate results

@@           Coverage Diff           @@
##           master     #921   +/-   ##
=======================================
  Coverage   96.11%   96.11%           
=======================================
  Files          39       39           
  Lines        9130     9130           
  Branches     1017     1017           
=======================================
  Hits         8775     8775           
  Misses        206      206           
  Partials      149      149           

Impacted Files	Coverage Δ
cadquery/cq.py	91.76% <ø> (ø)
cadquery/sketch.py	97.68% <100.00%> (ø)

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[Jojain]

Thanks @adam-urbanczyk this is much more clear now !

[jmwright]

Thanks for doing this @adam-urbanczyk

I made one extremely minor suggestion. It sounds like @Jojain approves, so can we merge?

[jmwright]

I think this looks good. Can I merge it @adam-urbanczyk ?

[adam-urbanczyk]

+1