Update docs link in ContractBreakingChangeError message (dbt-labs#7367)

Author: jtcohen6

.changes/unreleased/Under the Hood-20230417-114501.yaml

@@ -0,0 +1,6 @@
+kind: Under the Hood
+body: Update docs link in ContractBreakingChangeError message
+time: 2023-04-17T11:45:01.005104+02:00
+custom:
+  Author: jtcohen6
+  Issue: "7366"

core/dbt/exceptions.py

@@ -244,7 +244,7 @@ def message(self):
             "While comparing to previous project state, dbt detected a breaking change to an enforced contract."
             f"\n\n{reasons}\n\n"
             "Consider making an additive (non-breaking) change instead, if possible.\n"
-            "Otherwise, create a new model version: https://docs.getdbt.com/docs/collaborate/publish/model-versions"
+            "Otherwise, create a new model version: https://docs.getdbt.com/docs/collaborate/govern/model-versions"
         )