fix German word for E-Mail

[Schaeferjo]

Description of what you did:

fixed translations

[petersg83]

Thanks for your contribution!
Can you please sign off your commit?
You can do:

git commit --amend --signoff
git push -f

[codecov]

Codecov Report

Merging #7534 into master will increase coverage by 0.16%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master    #7534      +/-   ##
==========================================
+ Coverage   26.21%   26.38%   +0.16%     
==========================================
  Files        1131     1131              
  Lines       15440    15442       +2     
  Branches     2438     2439       +1     
==========================================
+ Hits         4048     4074      +26     
+ Misses       9576     9559      -17     
+ Partials     1816     1809       -7     

Flag	Coverage Δ
#front	18.25% <ø> (ø)
#unit	53.85% <75.00%> (+0.70%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/strapi/lib/core-api/controller.js	23.07% <0.00%> (ø)
packages/strapi-utils/lib/sanitize-entity.js	100.00% <100.00%> (+38.70%)	⬆️

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[petersg83]

LGTM! thanks for your contribution :)