Spring Boot Starter: use a term more aligned with OTel terminology rather than "Out of the box instrumentation"

[chalin]

Regarding https://opentelemetry.io/docs/zero-code/java/spring-boot-starter/out-of-the-box-instrumentation/, I think that we should avoid the term "out of the box". If we mean autoinstrumentation and/or related concepts, then we should find a better title and file name.

/cc @trask @tiffany76 @open-telemetry/docs-maintainers

[tiffany76]

Not sure I'm the best person to weigh in on this question since I'm far from an expert on Java, but some possibilities would be:

• built-in instrumentation
• automatic instrumentation (although, we've been moving away from this term, I think)
• pre-configured instrumentation
• autoconfigurations (which is used elsewhere in the zero-code Java section)

A search of the .io site shows we use the phrase "out of the box" on other pages too. In fact, the Java overview page describes the SDK as a "reference implementation provided out of the box."

🤷‍♀