Create tutorial for the dot command

[keforbes]

Just continuing my effort to expand our collection of tutorials. This one is for the dot . operator.

[akinsho]

👍

[codecov]

Codecov Report

Merging #2358 into master will increase coverage by 0.06%.
The diff coverage is 78.94%.

@@            Coverage Diff             @@
##           master    #2358      +/-   ##
==========================================
+ Coverage   37.59%   37.65%   +0.06%     
==========================================
  Files         299      300       +1     
  Lines       12464    12483      +19     
  Branches     1643     1643              
==========================================
+ Hits         4686     4701      +15     
- Misses       7529     7533       +4     
  Partials      249      249

Impacted Files	Coverage Δ
...src/Services/Learning/Tutorial/Tutorials/index.tsx	100% <100%> (ø)	⬆️
browser/src/Services/Learning/Tutorial/Notes.tsx	52.58% <50%> (-0.05%)	⬇️
...Learning/Tutorial/Tutorials/DotCommandTutorial.tsx	81.25% <81.25%> (ø)

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