Fix inclusion of version-specific content in Gradle plugin's docs

Fixes gh-21610

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/asciidoc/getting-started.adoc

@@ -2,7 +2,7 @@
 == Getting Started
 To get started with the plugin it needs to be applied to your project.
 
-ifeval::["{version-type}" == "RELEASE"]
+ifeval::["{spring-boot-artifactory-repo}" == "release"]
 The plugin is https://plugins.gradle.org/plugin/org.springframework.boot[published to Gradle's plugin portal] and can be applied using the `plugins` block:
 [source,groovy,indent=0,subs="verbatim,attributes",role="primary"]
 .Groovy
@@ -16,7 +16,7 @@ include::../gradle/getting-started/apply-plugin-release.gradle[]
 include::../gradle/getting-started/apply-plugin-release.gradle.kts[]
 ----
 endif::[]
-ifeval::["{version-type}" == "MILESTONE"]
+ifeval::["{spring-boot-artifactory-repo}" == "milestone"]
 The plugin is published to the Spring milestones repository.
 Gradle can be configured to use the milestones repository and the plugin can then be applied using the `plugins` block.
 To configure Gradle to use the milestones repository, add the following to your `settings.gradle` (Groovy) or `settings.gradle.kts` (Kotlin):
@@ -47,7 +47,7 @@ include::../gradle/getting-started/apply-plugin-release.gradle[]
 include::../gradle/getting-started/apply-plugin-release.gradle.kts[]
 ----
 endif::[]
-ifeval::["{version-type}" == "SNAPSHOT"]
+ifeval::["{spring-boot-artifactory-repo}" == "snapshot"]
 The plugin is published to the Spring snapshots repository.
 Gradle can be configured to use the snapshots repository and the plugin can then be applied using the `plugins` block.
 To configure Gradle to use the snapshots repository, add the following to your `settings.gradle` (Groovy) or `settings.gradle.kts` (Kotlin):

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/asciidoc/managing-dependencies.adoc

@@ -52,7 +52,7 @@ The `SpringBootPlugin` class provides a `BOM_COORDINATES` constant that can be u
 
 First, configure the project to depend on the Spring Boot plugin but do not apply it:
 
-ifeval::["{version-type}" == "RELEASE"]
+ifeval::["{spring-boot-artifactory-repo}" == "release"]
 [source,groovy,indent=0,subs="verbatim,attributes",role="primary"]
 .Groovy
 ----
@@ -65,7 +65,7 @@ include::../gradle/managing-dependencies/depend-on-plugin-release.gradle[]
 include::../gradle/managing-dependencies/depend-on-plugin-release.gradle.kts[]
 ----
 endif::[]
-ifeval::["{version-type}" == "MILESTONE"]
+ifeval::["{spring-boot-artifactory-repo}" == "milestone"]
 [source,groovy,indent=0,subs="verbatim,attributes",role="primary"]
 .Groovy
 ----
@@ -77,7 +77,7 @@ include::../gradle/managing-dependencies/depend-on-plugin-milestone.gradle[]
 include::../gradle/managing-dependencies/depend-on-plugin-release.gradle.kts[]
 ----
 endif::[]
-ifeval::["{version-type}" == "SNAPSHOT"]
+ifeval::["{spring-boot-artifactory-repo}" == "snapshot"]
 [source,groovy,indent=0,subs="verbatim,attributes",role="primary"]
 .Groovy
 ----