Add several spelling corrections

[pabs3]

No description provided.

[larsoner]

E               AssertionError: error doubeclick: correction doubleclick is an error itself

[codecov-io]

Codecov Report

Merging #1105 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1105   +/-   ##
=======================================
  Coverage   91.33%   91.33%           
=======================================
  Files           4        4           
  Lines         727      727           
  Branches      106      106           
=======================================
  Hits          664      664           
  Misses         46       46           
  Partials       17       17

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