Polish 'Improve reference documentation'

See gh-38942

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/data-initialization.adoc

@@ -19,7 +19,7 @@ This is controlled through two external properties:
 
 [[howto.data-initialization.using-hibernate]]
 === Initialize a Database Using Hibernate
-You can set `spring.jpa.hibernate.ddl-auto` explicitly, and the standard Hibernate property values are `none`, `validate`, `update`, `create`, and `create-drop`.
+You can set `spring.jpa.hibernate.ddl-auto` explicitly to one of the standard Hibernate property values which are `none`, `validate`, `update`, `create`, and `create-drop`.
 Spring Boot chooses a default value for you based on whether it thinks your database is embedded.
 It defaults to `create-drop` if no schema manager has been detected or `none` in all other cases.
 An embedded database is detected by looking at the `Connection` type and JDBC url.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/logging.adoc

@@ -1,7 +1,7 @@
 [[howto.logging]]
 == Logging
 Spring Boot has no mandatory logging dependency, except for the Commons Logging API, which is typically provided by Spring Framework's `spring-jcl` module.
-To use https://logback.qos.ch[Logback], you need to include it and `spring-jcl` in the classpath.
+To use https://logback.qos.ch[Logback], you need to include it and `spring-jcl` on the classpath.
 The recommended way to do that is through the starters, which all depend on `spring-boot-starter-logging`.
 For a web application, you only need `spring-boot-starter-web`, since it depends transitively on the logging starter.
 If you use Maven, the following dependency adds logging for you: