update readme

Author: claymccoy

README.md

@@ -21,7 +21,7 @@ Your plugin needs to extend PrivilegedSpringPlugin and implement registerBeanDef
 <h2>Usage</h2>
 
 1) Run `./gradlew releaseBundle`
-2) Put the `/build/distributions/<project>-X.zip` into the [configured plugins location for your service](https://pf4j.org/doc/packaging.html).
+2) Put the `/build/distributions/<project>-<version>.zip` into the [configured plugins location for your service](https://pf4j.org/doc/packaging.html).
 3) Configure the Spinnaker service. Put the following in the service yml to enable the plugin and configure the extension.
 ```
 spinnaker: