docs: fix typo in readme

[chenxsan]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

We can use | in markdown's table syntax as long as we escape it with a leading \.

Breaking Changes

Additional Info

[codecov]

Codecov Report

Merging #505 (49668f5) into master (9eaf21e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #505   +/-   ##
=======================================
  Coverage   97.95%   97.95%           
=======================================
  Files           5        5           
  Lines         244      244           
  Branches       80       80           
=======================================
  Hits          239      239           
  Misses          5        5           

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[alexander-akait]

Thanks