Fixed link to Maven Central Search Engine.

Author: khmarbaise

README.md

@@ -2,7 +2,7 @@ Plexus-Interpolation
 ===============
 
 [![Build Status](https://travis-ci.org/codehaus-plexus/plexus-interpolation.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-interpolation)
-[![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-interpolation.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%plexus-interpolation%22)
+[![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-interpolation.svg?label=Maven%20Central)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.codehaus.plexus%22%20AND%20a%3A%22plexus-interpolation%22)
 
 The current master is now at https://github.com/codehaus-plexus/plexus-interpolation