Update Creative Commons to 4.0 International.

dottes.tex

@@ -170,10 +170,10 @@
 
 \textbf{Ye Crie Havoc Booke of Dottes}
 
-Tune collection and presentation is copyright \copyright{} Jim Hague 2013-2024
+Tune collection and presentation is copyright \copyright{} Jim Hague 2013-2025
 and is licensed under a Creative Commons
-Attribution-NonCommercial-ShareAlike 2.0 UK: England \& Wales License.
-Details at \url{http://creativecommons.org/licenses/by-nc-sa/2.0/uk/}.
+Attribution-NonCommercial-ShareAlike 4.0 License.
+Details at \url{https://creativecommons.org/licenses/by-nc-sa/4.0/}.
 
 Some tunes are reproduced from Paul Hardy's Session Tunebook
 (\url{www.paulhardy.net}).

web/index.html

@@ -211,9 +211,9 @@
     <div class="dottes-body">
       <p>
       <a rel="license"
-      href="http://creativecommons.org/licenses/by-sa/2.0/uk/deed.en_US">
+      href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
         <img alt="Creative Commons License" style="border-width:0"
-             src="http://i.creativecommons.org/l/by-nc-sa/2.0/uk/88x31.png"/>
+             src="img/by-nc-sa.png"/>
       </a>
       <br />
       The collection of tunes that is
@@ -223,9 +223,8 @@
             href="https://lunch.org.uk" property="cc:attributionName"
             rel="cc:attributionURL">Jim Hague</a>
       is licensed under a
-      <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/2.0/uk/">
-        Creative Commons Attribution-NonCommercial-ShareAlike 2.0 UK: England &amp; Wales
-        License</a>.
+      <a rel="license" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
+        Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.
       </p>
     </div>