Add lib protobuf to apache license section

Bug 27475709

Change-Id: I79db41955516aff0f9eab11e2be91b237ab5269a
diff --git a/assets/licenses.html b/assets/licenses.html
index 690d0af..c24ed63 100644
--- a/assets/licenses.html
+++ b/assets/licenses.html
@@ -6,7 +6,7 @@
 </head>
 <body>
 
-<h3>Notices for: guava and libphonenumber</h3>
+<h3>Notices for: guava, libphonenumber, and libprotobuf-java-nano</h3>
 <pre>
                                  Apache License
                            Version 2.0, January 2004