Spring AI Documentation: "spring.data.redis.uri" must be "spring.data.redis.url"

The correct property name is url, not uri.

Document to review: https://github.com/spring-projects/spring-ai/blame/bed1db352a44da91d4a3f1bf2383cbaf5e361247/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/redis.adoc#L87