Fix a Javadoc error reported when compiling with Java 8.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1631456 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/fileupload/MultipartStream.java b/src/main/java/org/apache/commons/fileupload/MultipartStream.java
index bf460f4..600a44e 100644
--- a/src/main/java/org/apache/commons/fileupload/MultipartStream.java
+++ b/src/main/java/org/apache/commons/fileupload/MultipartStream.java
@@ -50,7 +50,7 @@
  *   header-part := 1*header CRLF<br>
  *   header := header-name ":" header-value<br>
  *   header-name := &lt;printable ascii characters except ":"&gt;<br>
- *   header-value := &lt;any ascii characters except CR & LF&gt;<br>
+ *   header-value := &lt;any ascii characters except CR &amp; LF&gt;<br>
  *   body-data := &lt;arbitrary data&gt;<br>
  * </code>
  *