Merge pull request #21030 from dreis2211

* gh-21030:
  Fix links to CLI binaries in non-snapshot builds

Closes gh-21030

Author: wilkinsona

buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java

@@ -156,7 +156,7 @@ private void configureCommonAttributes(Project project, AbstractAsciidoctorTask
 
 	private String determineArtifactoryRepo(Project project) {
 		String version = project.getVersion().toString();
-		String type = version.substring(version.lastIndexOf('.'));
+		String type = version.substring(version.lastIndexOf('.') + 1);
 		if (type.equals("RELEASE")) {
 			return "release";
 		}