fixed error reported by Checkstyle

git-svn-id: https://svn.apache.org/repos/asf/maven/doxia/doxia-sitetools/trunk@1736819 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/doxia-integration-tools/src/main/java/org/apache/maven/doxia/tools/DefaultSiteTool.java b/doxia-integration-tools/src/main/java/org/apache/maven/doxia/tools/DefaultSiteTool.java
index 0ff7038..c6c55d0 100644
--- a/doxia-integration-tools/src/main/java/org/apache/maven/doxia/tools/DefaultSiteTool.java
+++ b/doxia-integration-tools/src/main/java/org/apache/maven/doxia/tools/DefaultSiteTool.java
@@ -530,8 +530,8 @@
             catch ( IOException e )
             {
                 // Prefer logging?
-                throw new SiteToolException( "IOException: cannot interpolate environment properties: " + e.getMessage(),
-                                             e );
+                throw new SiteToolException( "IOException: cannot interpolate environment properties: "
+                    + e.getMessage(), e );
             }
         }