Fix javadoc build - ampersands are bad

Change-Id: I647aa8ea452ed1783d9bb26fc34cc98ec1c99318
diff --git a/apps/pim/src/main/java/org/onosproject/pim/impl/PIMInterface.java b/apps/pim/src/main/java/org/onosproject/pim/impl/PIMInterface.java
index 4d8d05e..8bf2333 100644
--- a/apps/pim/src/main/java/org/onosproject/pim/impl/PIMInterface.java
+++ b/apps/pim/src/main/java/org/onosproject/pim/impl/PIMInterface.java
@@ -31,7 +31,7 @@
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**
- * PIM Interface represents an ONOS Interface with IP & MAC addresses for
+ * PIM Interface represents an ONOS Interface with IP and MAC addresses for
  * a given ConnectPoint.
  */
 public class PIMInterface {