fix

Author: mevdschee

README.md

@@ -657,7 +657,7 @@ Then the server will return a '422' HTTP status code and nice error message:
 
 You can parse this output to make form fields show up with a red border and their appropriate error message.
 
-## OpenAPI 3.0
+## OpenAPI specification
 
 On the "/openapi" end-point the OpenAPI 3.0 (formerly called "Swagger") specification is served. 
 It is a machine readable instant documentation of your API. To learn more, check out these links: