Changed description to use the class name for better clarity

Fixes spring-projectsgh-20688

buildSrc/src/main/java/org/springframework/boot/build/context/properties/DocumentConfigurationProperties.java

@@ -82,7 +82,7 @@ void documentConfigurationProperties() throws IOException {
 				.addOverride("spring.datasource.dbcp2", "Commons DBCP2 specific settings")
 				.addOverride("spring.datasource.tomcat", "Tomcat datasource specific settings")
 				.addOverride("spring.datasource.hikari",
-						"Hikari specific settings bound to an instance of HikariDataSource")
+						"Hikari specific settings bound to an instance of `HikariDataSource`")
 				.addSection("transaction").withKeyPrefixes("spring.jta", "spring.transaction").addSection("integration")
 				.withKeyPrefixes("spring.activemq", "spring.artemis", "spring.batch", "spring.integration",
 						"spring.jms", "spring.kafka", "spring.rabbitmq", "spring.hazelcast", "spring.webservices")