fix readme compatibility header

Author: frantuma

README.md

@@ -19,10 +19,10 @@ The [github wiki](https://github.com/swagger-api/swagger-core/wiki) contains doc
 ## 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
+2.1.11                     | 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
 2.1.9                     | 2021-04-20   | 3.0           | [tag v2.1.9](https://github.com/swagger-api/swagger-core/tree/v2.1.9)                                             | Supported
 2.1.8                     | 2021-04-18   | 3.0           | [tag v2.1.8](https://github.com/swagger-api/swagger-core/tree/v2.1.8)                                             | Supported