Fix some Spanish misspellings

[oriolhub]

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Description

Fix some misspellings for Spanish (es/es).

💔Thank you!

[codecov-io]

Codecov Report

Merging #278 into dev will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                dev     #278   +/-   ##
=========================================
  Coverage     78.71%   78.71%           
  Complexity      232      232           
=========================================
  Files            82       82           
  Lines           747      747           
=========================================
  Hits            588      588           
  Misses          159      159

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