Fix Javadoc warning - @param argument "file" is not a parameter name.

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/io/trunk@491361 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/java/org/apache/commons/io/FileUtils.java

@@ -973,8 +973,8 @@ public static String readFileToString(File file, String encoding) throws IOExcep
      * @throws IOException in case of an I/O error
      * @since Commons IO 1.3
      */
-    public String readFileToString(File f) throws IOException {
-        return readFileToString(f, null);
+    public String readFileToString(File file) throws IOException {
+        return readFileToString(file, null);
     }
 
     /**