Fix the GitHub origin URL

When putting a link to the original script on a downloaded script in the
script catalog, the generated link went to the repository generally and
didn't directly link to the file that was downloaded. Change the URL so
that it will link directly to the downloaded script.

Author: mtughan

src/main/java/org/jenkinsci/plugins/scriptler/share/gh/GHCatalog.java

@@ -31,7 +31,7 @@ public class GHCatalog implements ScriptInfoCatalog<ScriptInfo> {
 
     private final static Logger LOGGER = Logger.getLogger(GHCatalog.class.getName());
 
-    public static final String REPO_BASE = "https://github.com/jenkinsci/jenkins-scripts/tree/master/scriptler";
+    public static final String REPO_BASE = "https://github.com/jenkinsci/jenkins-scripts/blob/master/scriptler/{1}";
     public static final String DOWNLOAD_URL = "https://raw.github.com/jenkinsci/jenkins-scripts/master/scriptler/{1}";
 
     public static final CatalogInfo CATALOG_INFO = new CatalogInfo("gh", REPO_BASE, REPO_BASE, DOWNLOAD_URL);