Fix formatting: Use literal '->' in CDATA context

[d-buchmann]

This fixes the broken format of the mass creation placeholder text in the demo instance.
I also copy-pasted this in crowdin, so the changes won't get reset later.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.82%. Comparing base (a6be786) to head (c9a1feb).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1023      +/-   ##
============================================
- Coverage     55.83%   55.82%   -0.02%     
  Complexity     6474     6474              
============================================
  Files           546      546              
  Lines         20864    20864              
============================================
- Hits          11650    11647       -3     
- Misses         9214     9217       +3     

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