[stable23] Fix one hardcoded string

[backportbot-nextcloud]

backport of #1099

[codecov-commenter]

Codecov Report

Merging #1101 (8c49ad3) into stable23 (6ef5ed8) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head 8c49ad3 differs from pull request most recent head 89801bc. Consider uploading reports for the commit 89801bc to get more accurate results

@@              Coverage Diff              @@
##             stable23   #1101      +/-   ##
=============================================
- Coverage        0.69%   0.69%   -0.01%     
  Complexity       5777    5777              
=============================================
  Files             292     292              
  Lines           19964   19965       +1     
=============================================
  Hits              139     139              
- Misses          19825   19826       +1     

Impacted Files	Coverage Δ
lib/Model/ShareWrapper.php	0.00% <0.00%> (ø)

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[blizzz]

/rebase