fix: typo in README.md

[anatolykopyl]

--builDir -> --docsDir

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.32%. Comparing base (0e27e41) to head (6a890f0).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #429 +/- ## ======================================= Coverage 95.32% 95.32% ======================================= Files 4 4 Lines 792 792 Branches 35 35 ======================================= Hits 755 755 Misses 37 37 ```

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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud