Wrong 7.4.0.Beta version in 7.4 docs

There is a wrong version "7.4.0.Beta" on several places in docs. This should be replaced with "7.4.0.GA" and "7.4.0" depending on the usage in the text.

eg.:

• https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.4/html-single/developing_jakarta_enterprise_beans_applications/index
• https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.4/html-single/development_guide/index
• https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.4/html-single/configuration_guide/index
• https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.4/html-single/configuring_messaging/index