Typo on specified environment variable postgres_auto_create_accounts

In the documentation page Installing Guacamole with Docker under optional environment variables for PostgreSQL Authentication, the environment variable documented as POSTGRES_AUTO_CREATE_ACCOUNTS does not write to the resulting guacamole.properties file in the running container. When typed as POSTGRESQL_AUTO_CREATE_ACCOUNTS the environment variable is correctly written to guacamole.properties.

This could be an issue with other environment variables. It might make sense to use the same spelling for postgres in both guacamole.properties and environment variables passed through docker to avoid these sort of bugs.