Update nl.xml with typo fixes and new strings

[NekoJonez]

Would fix #1438

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.66%. Comparing base (5e59984) to head (8cbf42c).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1439   +/-   ##
=======================================
  Coverage   52.66%   52.66%           
=======================================
  Files         265      265           
  Lines       14417    14417           
  Branches     1587     1587           
=======================================
  Hits         7592     7592           
  Misses       6522     6522           
  Partials      303      303           

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[dbuechel]

Excellent, thank you very much for helping us out with keeping the Dutch translation up-to-date and correct - it is much appreciated!

[dbuechel]

As a side-note: We're still in development, so there may be a few textual changes to come, in case you'd have the capacity to review resp. correct them in the upcoming weeks? Either way, thanks a lot for your support.

[NekoJonez]

Will do, ping me friend and I'll take look at it then. @dbuechel

[dbuechel]

Excellent, thanks a lot, that is very much appreciated!