update hints

nominatim/tools/check_database.py

@@ -152,8 +152,14 @@ def check_connection(conn: Any, config: Configuration) -> CheckResult:
              Database version ({db_version}) doesn't match Nominatim version ({nom_version})
 
              Hints:
-             * Are you connecting to the right database?
-             * Have you run all migrations?
+             * Are you connecting to the correct database?
+             
+             A) If database version is lower than Nominatim version: Run migrations
+                nominatim admin --migrate
+ 
+             B) If Nominatim version is lower than database version: Update Nominatim
+
+             For both check the Migration chapter of the Administration Guide.
 
              Project directory: {config.project_dir}
              Current setting of NOMINATIM_DATABASE_DSN: {config.DATABASE_DSN}
@@ -181,7 +187,7 @@ def check_database_version(conn: Connection, config: Configuration) -> CheckResu
              placex table not found
 
              Hints:
-             * Are you connecting to the right database?
+             * Are you connecting to the correct database?
              * Did the import process finish without errors?
 
              Project directory: {config.project_dir}