Swagger UI docker hub page info outdated

[jnbolito]

Hi, I believe the info in docker hub regarding swaggerapi/swagger-ui is outdated:

It says to run the image to use the command
docker run -p 80:8080 -e API_URL=http://generator.swagger.io/api/swagger.json swaggerapi/swagger-ui
however this is outdated for v3.19.5 of the image and (in such cases) should be changed to:
docker run -p 80:8080 -e URL=http://generator.swagger.io/api/swagger.json swaggerapi/swagger-ui.