[backend] fix typo in data sharing capa description migration

[marieflorescontact]

Proposed changes

Related issues

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9be46c3) 65.02% compared to head (c9d47b1) 65.03%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5938      +/-   ##
==========================================
+ Coverage   65.02%   65.03%   +0.01%     
==========================================
  Files         528      528              
  Lines       62005    62005              
  Branches     4967     4969       +2     
==========================================
+ Hits        40318    40325       +7     
+ Misses      21687    21680       -7     

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