docs: fixed typo

[0xflotus]

📑 Summary

Brief description about the content of your PR.

Resolves no known issue

📏 Design Decisions

Describe the way your implementation works or what design decisions you made if applicable.

It's a simple typo fix.

📋 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 #4893 (0239e49) into develop (c9d6769) will decrease coverage by 32.84%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #4893       +/-   ##
============================================
- Coverage    76.50%   43.67%   -32.84%     
============================================
  Files          143       20      -123     
  Lines        12697     4632     -8065     
  Branches       601       21      -580     
============================================
- Hits          9714     2023     -7691     
+ Misses        2846     2608      -238     
+ Partials       137        1      -136     

Flag	Coverage Δ
e2e	?
unit	43.67% <ø> (ø)

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see 139 files with indirect coverage changes

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