Use project.version as default for createSaganRelease task

gradle-plugin/README.adoc

@@ -185,7 +185,7 @@ The following command will perform a dry-run and provide output of what creating
 === `createSaganRelease`
 
 Create a new release version for the current project on spring.io using the Sagan API.
-This task uses the configured `referenceDocUrl` and `apiDocUrl` values from the DSL.
+This task uses the configured `referenceDocUrl`, `apiDocUrl` and `replaceSnapshotVersionInReferenceDocUrl` values from the DSL.
 
 The following command will create a new release version:
 
@@ -196,7 +196,7 @@ The following command will create a new release version:
 
 *Task properties:*
 
-* `nextVersion`: Specify the version used to create the release (optional, uses <<getNextReleaseMilestone>> if not specified)
+* `nextVersion`: Specify the version used to create the release (optional, uses `project.version` if not specified)
 * `gitHubAccessToken`: A personal access token used to access the Sagan API (required)
 
 *Full example:*

gradle-plugin/src/main/java/io/spring/gradle/plugin/release/CreateSaganReleaseTask.java

@@ -17,7 +17,6 @@
 
 import com.github.api.Repository;
 import io.spring.gradle.plugin.core.ProjectUtils;
-import io.spring.gradle.plugin.core.RegularFileUtils;
 import io.spring.release.SpringReleases;
 import org.gradle.api.DefaultTask;
 import org.gradle.api.Project;
@@ -85,9 +84,7 @@ public static void register(Project project) {
 
 			// @formatter:off
 			var versionProvider = ProjectUtils.getProperty(project, SpringReleasePlugin.NEXT_VERSION_PROPERTY)
-					.orElse(ProjectUtils.findTaskByType(project, GetNextReleaseMilestoneTask.class)
-							.getNextReleaseMilestoneFile()
-							.map(RegularFileUtils::readString));
+					.orElse(project.getRootProject().getVersion().toString());
 			// @formatter:on
 
 			var owner = springRelease.getRepositoryOwner().get();