Fix github links

Author: ahornace

README.md

@@ -25,7 +25,7 @@ your source tree. It can understand various program file formats and
 version control histories of many source code management systems.
 
 Official page of the project is on:
-<http://opengrok.github.com/OpenGrok/>
+<https://oracle.github.io/opengrok/>
 
 ## 2. OpenGrok install and setup
 

opengrok-web/src/main/webapp/foot.jspf

@@ -42,7 +42,7 @@ org.opengrok.indexer.web.Prefix"
 
         %>
     <div id="footer">
-<p><a href="http://opengrok.github.com/OpenGrok/"
+<p><a href="https://oracle.github.io/opengrok/"
  title="Served by OpenGrok (<%= Info.getVersion() %> - <%= Info.getShortRevision() %>)"><span id="fti"></span></a></p>
 <% if(dateForLastIndexRun != null) { %>
 <p>Last Index update <%= dateForLastIndexRun %></p>

pom.xml

@@ -18,7 +18,7 @@ information: Portions Copyright [yyyy] [name of copyright owner]
 
 CDDL HEADER END
 
-Copyright (c) 2010, 2020, Oracle and/or its affiliates. All rights reserved.
+Copyright (c) 2010, 2021, Oracle and/or its affiliates. All rights reserved.
 Portions Copyright (c) 2018, 2020, Chris Fraire <[email protected]>.
 
 -->
@@ -31,7 +31,7 @@ Portions Copyright (c) 2018, 2020, Chris Fraire <[email protected]>.
     <packaging>pom</packaging>
 
     <name>OpenGrok</name>
-    <url>http://opengrok.github.com/OpenGrok/</url>
+    <url>https://oracle.github.io/opengrok/</url>
     <organization>
         <name>Oracle</name>
         <url>http://www.oracle.com</url>