updated Guidelines bibliography (dates)

Author: gabrielbodard

guidelines/xml/toc.xml

@@ -164,7 +164,7 @@ End license statement: do not remove -->
         <p>To cite the EpiDoc Guidelines, please use the following information:</p>
         <quote>
             <bibl>Tom Elliott, Gabriel Bodard, Elli Mylonas, Simona Stoyanova, Charlotte Tupman,
-                Scott Vanderbilt, et al. (<date>2007-2022</date>), <title level="m">EpiDoc
+                Scott Vanderbilt, et al. (<date>2017-2024</date>), <title level="m">EpiDoc
                     Guidelines: Ancient documents in TEI XML</title> (Version 9). Available: <ref
                     target="https://epidoc.stoa.org/gl/latest/"
                     >https://epidoc.stoa.org/gl/latest/</ref>.</bibl>