Projections is a nested section in the reference documentation

i think there is a problem with the spring data jdbc documentation [here](https://docs.spring.io/spring-data/jdbc/docs/current/reference/html). The 9.8.6 section "Projections" is under the 9.8 section "Query by example". But i think that the "Projections" section has nothing to do with "Query by example" and should be moved to the upper level