fix readme compatibility header

Author: frantuma

README.md

@@ -31,8 +31,8 @@ For 2.X see [getting started with swagger 2.X](https://github.com/frantuma/swagg
 ## Compatibility
 The OpenAPI Specification has undergone several revisions since initial creation in 2010.  The Swagger Core project has the following compatibilities with the OpenAPI Specification:
 
-Swagger core Version      | Release Date | OpenAPI Spec compatibility | Notes                                                                                                             | Status
-------------------------- |--------------| -------------------------- |-------------------------------------------------------------------------------------------------------------------| ----
+Swagger core Version      | Release Date | OpenAPI Spec compatibility | Notes | Status
+------------------------- | ------------ | -------------------------- | ----- | ----
 2.1.12 (**current stable**)| 2021-12-23   | 3.0           | [tag v2.1.12](https://github.com/swagger-api/swagger-core/tree/v2.1.12)                                           | Supported
 2.1.11                     | 2021-09-29   | 3.0           | [tag v2.1.11](https://github.com/swagger-api/swagger-core/tree/v2.1.11)                                           | Supported
 2.1.10                     | 2021-06-28   | 3.0           | [tag v2.1.10](https://github.com/swagger-api/swagger-core/tree/v2.1.10)                                           | Supported