German translations for 'confirmation instructions'

[sr-verde]

In this PR, I am trying to get some better, more user-friendly wording for the German translations of 'confirmation instructions'. Even more, I differ from the English original and try to give the user helpful instructions. So, the current English version is:

Thank you. Confirmation instructions have been sent to user@example.com.

I have translated that to something like:

Thank you. To confirm your email address %(email)s, please click on the link in the email we have just sent to you.

One may want to adapt that for other languages as well.

I also translated "confirmation instructions" to "confirmation link" ("Bestätigungslink"). But "confirmation instructions" doesn't sound as weird (to me as a non-native speaker) as it does in German.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0b971c1) 98.40% compared to head (4e5d898) 98.40%.

Additional details and impacted files

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##           master     #917   +/-   ##
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  Coverage   98.40%   98.40%           
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  Files          35       35           
  Lines        4508     4508           
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  Hits         4436     4436           
  Misses         72       72           

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[jwag956]

I'll look into changing the default/English... (and try to keep your translation!).

Thanks.