Fixing Checkstyle issue, by refactoring the default issue link URL to a constant, and re-using the %ISSUE% constant.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1774329 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java b/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
index 1f45fee..95ac89e 100644
--- a/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
+++ b/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
@@ -118,6 +118,8 @@
 
     public static final String DEFAULT_ISSUE_ID_REGEX_PATTERN = "[a-zA-Z]{2,}-\\d+";
 
+    private static final String DEFAULT_ISSUE_LINK_URL = "https://issues.apache.org/jira/browse/" + ISSUE_TOKEN;
+
     /**
      * Used to specify the format to use for the dates in the headings of the
      * report.
@@ -337,7 +339,7 @@
      *
      * @since 2.2
      */
-    @Parameter( property = "issueLinkUrl", defaultValue = "https://issues.apache.org/jira/browse/%ISSUE%", required = true )
+    @Parameter( property = "issueLinkUrl", defaultValue = DEFAULT_ISSUE_LINK_URL, required = true )
     private String issueLinkUrl;
 
     /**