Update README (jandex version) (#26)

README.adoc

@@ -5,7 +5,7 @@
 :project-name:    jandex-gradle-plugin
 :project-group:   org.kordamp.gradle
 :project-version: 1.1.0
-:jandex-version:  3.0.0
+:jandex-version:  3.0.5
 :plugin-id:       {project-group}.jandex
 
 image:https://img.shields.io/github/actions/workflow/status/{project-owner}/{project-name}/early-access.yml?branch=master&logo=github&label=Build["Build Status", link="https://github.com/{project-owner}/{project-name}/actions"]
@@ -77,12 +77,12 @@ $ gradle jandex
 === Jandex Version
 
 This plugin relies on Jandex {jandex-version} to perform its job, however you may configure a different version if needed.
-Simply add the maven coordinates to the `jandex` extension as shown next
+Simply add the desired version (for the maven coordinates `io.smallrye:jandex:<version>`) to the `jandex` extension as shown next
 
 [source,groovy]
 ----
 jandex {
-    version = '2.2.1.Final'
+    version = '3.0.0'
 }
 ----