Minor documentation correction in File.

modules/juce_core/files/juce_File.h

@@ -430,7 +430,8 @@ public:
 
         If it already exists or is a directory, this method will do nothing.
 
-        @returns    true if the file has been created (or if it already existed).
+        @returns    a result to indicate whether the file was created successfully,
+                    or an error message if it failed.
         @see createDirectory
     */
     Result create() const;