Update earliest CR end date to 2025-01-31

As agreed during the TTWG call 2024-11-21

index.html

@@ -16,7 +16,7 @@
       // specification status (e.g. WD, LCWD, NOTE, etc.). If in doubt use ED.
       specStatus: "CR",
       implementationReportURI: "https://www.w3.org/wiki/TimedText/DAPT_Implementation_Report",
-      crEnd: "2025-01-01",
+      crEnd: "2025-01-31",
 
       // the specification's short name, as in https://www.w3.org/TR/short-name/
       shortName: "dapt",