Polish contribution

Closes gh-8230

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

@@ -589,6 +589,7 @@ content into your application; rather pick only the properties that you need.
 	spring.data.mongodb.host=localhost # Mongo server host. Cannot be set with uri.
 	spring.data.mongodb.password= # Login password of the mongo server. Cannot be set with uri.
 	spring.data.mongodb.port=27017 # Mongo server port. Cannot be set with uri.
+	spring.data.mongodb.reactive-repositories.enabled=true # Enable Mongo reactive repositories.
 	spring.data.mongodb.repositories.enabled=true # Enable Mongo repositories.
 	spring.data.mongodb.uri=mongodb://localhost/test # Mongo database URI. Cannot be set with host, port and credentials.
 	spring.data.mongodb.username= # Login user of the mongo server. Cannot be set with uri.

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -3299,7 +3299,8 @@ pooled connection factory by default.
 http://www.mongodb.com/[MongoDB] is an open-source NoSQL document database that uses a
 JSON-like schema instead of traditional table-based relational data. Spring Boot offers
 several conveniences for working with MongoDB, including the
-`spring-boot-starter-data-mongodb` '`Starter`'.
+`spring-boot-starter-data-mongodb` and `spring-boot-starter-data-mongodb-reactive`
+'`Starters`'.