Docs: fix typo in ER aliases table

[Zorbing]

📑 Summary

Use many(0) instead of many(1) as an example for the "Zero or more" category.

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added necessary unit/e2e tests.
• 📓 have added documentation. Make sure MERMAID_RELEASE_VERSION is used for all new features.
• 🔖 targeted develop branch

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[codecov]

Codecov Report

Merging #4807 (dff65d5) into develop (9007482) will decrease coverage by 27.78%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #4807       +/-   ##
============================================
- Coverage    73.12%   45.34%   -27.78%     
============================================
  Files          146       53       -93     
  Lines        14487     6669     -7818     
  Branches       612       32      -580     
============================================
- Hits         10593     3024     -7569     
+ Misses        3756     3644      -112     
+ Partials       138        1      -137     

Flag	Coverage Δ
e2e	?
unit	45.34% <ø> (ø)

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see 142 files with indirect coverage changes