update sodt

update link to wg + charter

time/index.html

@@ -74,8 +74,8 @@
 
 <section id="sotd">
 <p><strong>For OGC -</strong> This is a Public Draft of a document prepared by the Spatial Data on the Web Working Group
-	(<a href="http://www.opengeospatial.org/projects/groups/sdwwg">SDWWG</a>)
-— a joint W3C-OGC project (see <a href="https://www.w3.org/2015/spatial/charter">charter</a>).
+	(<a href="https://www.w3.org/2021/sdw/">SDWWG</a>)
+— a joint W3C-OGC project (see <a href="https://www.w3.org/2021/10/sdw-charter.html">charter</a>).
 The document is prepared following W3C conventions. Comments regarding this document are welcome - please submit them in the <a href="https://github.com/w3c/sdw/issues">issue tracker</a>. Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. </p>
 
 <p>New classes and properties are introduced in this revision of OWL-Time. The new elements primarily relate to relaxing the limitation that time position uses only the Gregorian Calendar, and are placed in a logical hierarchy in relation to the original elements. While there is less implementation evidence for these than the elements from the 2006 version, the new elements are essential to satisfying key requirements in the revision. </p>