Update README.md

[zea-vtl]

fixed a typo

Checklist

• I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
• I have created at least one test case for the changes I have made -- N/A
• I have updated the documentation for the changes I have made
• I have added my changes to the CHANGELOG.md -- N/A because it's not needed

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[sobolevn]

Thank you!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (82ef3ef) to head (c39b97f).
Report is 303 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##            master     #2014    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           80        81     +1     
  Lines         2485      2568    +83     
  Branches       437        44   -393     
==========================================
+ Hits          2485      2568    +83     

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