modifying copyright year in the NOTICE file & footer of all the docs pages

git-svn-id: https://svn.apache.org/repos/asf/xerces/java/trunk@1829622 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/NOTICE b/NOTICE
index 354d112..19bebbd 100644
--- a/NOTICE
+++ b/NOTICE
@@ -4,7 +4,7 @@
    =========================================================================
 
    Apache Xerces Java
-   Copyright 1999-2015 The Apache Software Foundation
+   Copyright 1999-2018 The Apache Software Foundation
 
    This product includes software developed at
    The Apache Software Foundation (http://www.apache.org/).
diff --git a/docs/docs-book.xml b/docs/docs-book.xml
index fd19989..f023c7b 100644
--- a/docs/docs-book.xml
+++ b/docs/docs-book.xml
@@ -17,7 +17,7 @@
 -->
 <!DOCTYPE book SYSTEM 'dtd/book.dtd'>
 <book title='&ParserName; Documentation' 
-      copyright='1999-2014 The Apache Software Foundation'>
+      copyright='1999-2018 The Apache Software Foundation'>
  <external label='Home' href='http://xerces.apache.org/'/>
  <separator/>
  <document label='Readme' title='&ParserNameLong; Readme'