Add post publication commnet

Author: znichollscr

Database/input-data/supplementary-source-id-info.yaml

@@ -131,3 +131,7 @@ UOEXETER-CMIP-2-0-0:
   doi: 10.25981/ESGF.input4MIPs.CMIP7/2522673
 UofMD-landState-3-0:
   license_id: CC BY 4.0
+  comment_post_publication: >-
+    v3.0 contains a number of spurious spikes post-1950.
+    These have been addressed in v3.1.
+    As a result, v3.0 has been retracted.