Fix checkstyle warnings.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/logging/trunk@1606039 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/logging/Log.java

@@ -58,7 +58,7 @@ package org.apache.commons.logging;
  */
 public interface Log {
 
-	/**
+    /**
      * Logs a message with debug log level.
      *
      * @param message log this message