Use dashed case for properties appendix

Additional items added since 1.1.x

Fixes gh-1834

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -237,7 +237,7 @@ content into your application; rather pick only the properties that you need.
 	spring.data.elasticsearch.repositories.enabled=true # if spring data repository support is enabled
 
 	# DATA RESET ({spring-data-rest-javadoc}/core/config/RepositoryRestConfiguration.{dc-ext}[RepositoryRestConfiguration}])
-	spring.data.rest.baseUri=foo # base URI against which the exporter should calculate its links
+	spring.data.rest.base-uri= # base URI against which the exporter should calculate its links
 
 	# FLYWAY ({sc-spring-boot-autoconfigure}/flyway/FlywayProperties.{sc-ext}[FlywayProperties])
 	flyway.locations=classpath:db/migrations # locations of migrations scripts