Clarify coupled resource waf example

Fixes #103

Author: archaeogeek

docs/partials/coupledresource.asciidoc

@@ -31,7 +31,7 @@ This may be:
 
 |Examples |http://image2000.jrc.ec.europa.eu/#image2000_1_n12_multi
 
-|Revision date |December 2025
+|Revision date |February 2026
 |===
 
 .Corresponding element in other standards...

docs/snippets/coupledresource-waf.xml

@@ -3,7 +3,7 @@
   <gmd:identificationInfo>
     <srv:SV_ServiceIdentification>
       ...
-      <srv:operatesOn xlink:href='http://mywaf.com/metadata/dataset.xml'/>
+      <srv:operatesOn xlink:href='http://mywaf.com/metadata/dataset.xml#id=file-uuid'/>
     </srv:SV_ServiceIdentification>
   </gmd:identificationInfo>
   ...