add link to documentation in deprecation message

core/dbt/events/types.py

@@ -455,7 +455,7 @@ def code(self) -> str:
         return "D016"
 
     def message(self) -> str:
-        description = f"Installed package '{self.package_name}' is overriding the built-in materialization '{self.materialization_name}'. Overrides of built-in materializations from installed packages will be deprecated in future versions of dbt."
+        description = f"Installed package '{self.package_name}' is overriding the built-in materialization '{self.materialization_name}'. Overrides of built-in materializations from installed packages will be deprecated in future versions of dbt. Please refer to https://docs.getdbt.com/reference/global-configs/legacy-behaviors#deprecate_package_materialization_builtin_override for detailed documentation and suggested workarounds."
 
         return line_wrap_message(warning_tag(description))