Update the reference documentation to use more up-to-date examples

[jearton]

spring.version -> spring-framework.version

[wilkinsona]

Thanks for the report but I'm not sure what problem you're reporting. The examples in the docs are using the (now admittedly end-of-life) Spring IO Platform bom that does contain a spring.version property. Can you please be more specific?

[jearton]

@wilkinsona Oh, it's my fault. I imported Spring Boot Parent bom that is org.springframework.boot:spring-boot-dependencies:3.1.0 in which the spring version property is spring-framework.version

[wilkinsona]

Cool. Thanks for the clarification. I don't think it would hurt to update the docs with some more up-to-date examples. We can use this issue to do that.