Polish "Update Kotlin-related reference documentation"

See gh-18573

Author: wilkinsona

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

@@ -7614,23 +7614,20 @@ In order to avoid mixing different versions of Kotlin dependencies on the classp
 With Maven, the Kotlin version can be customized via the `kotlin.version` property and plugin management is provided for `kotlin-maven-plugin`.
 With Gradle, the Spring Boot plugin automatically aligns the `kotlin.version` with the version of the Kotlin plugin.
 
-Spring Boot also manages the version of Coroutines dependencies by importing Kotlin
-Coroutines BOM, which can be customized via the `kotlin-coroutines.version` property.
+Spring Boot also manages the version of Coroutines dependencies by importing the Kotlin Coroutines BOM.
+The version can be customized via the `kotlin-coroutines.version` property.
 
-TIP: `org.jetbrains.kotlinx:kotlinx-coroutines-reactor` dependency is provided by default
-if one bootstraps a Kotlin project with at least one Reactive dependency on https://start.spring.io/#!language=kotlin[start.spring.io].
+TIP: `org.jetbrains.kotlinx:kotlinx-coroutines-reactor` dependency is provided by default if one bootstraps a Kotlin project with at least one reactive dependency on https://start.spring.io/#!language=kotlin[start.spring.io].
 
 
 [[boot-features-kotlin-configuration-properties]]
 === `@ConfigurationProperties`
-`@ConfigurationProperties` when used in combination with `@ConstructorBinding` (see the
-<<boot-features-external-config-constructor-binding,dedicated documentation>> for more details)
-supports classes with immutable `val` properties as shown in the following example:
+`@ConfigurationProperties` when used in combination with <<boot-features-external-config-constructor-binding,`@ConstructorBinding`>> supports classes with immutable `val` properties as shown in the following example:
 
 [source,kotlin,indent=0]
 ----
-@ConfigurationProperties("example.kotlin")
 @ConstructorBinding
+@ConfigurationProperties("example.kotlin")
 data class KotlinExampleProperties(
 		val name: String,
 		val description: String,
@@ -7650,8 +7647,7 @@ Note that some features (such as detecting the default value or deprecated items
 
 [[boot-features-kotlin-testing]]
 === Testing
-While it is possible to use JUnit 4 to test Kotlin code, JUnit 5 now provided by default
-with Spring Boot is recommended.
+While it is possible to use JUnit 4 to test Kotlin code, JUnit 5 is provided by default and is recommended.
 JUnit 5 enables a test class to be instantiated once and reused for all of the class's tests.
 This makes it possible to use `@BeforeClass` and `@AfterClass` annotations on non-static methods, which is a good fit for Kotlin.