Rename migration revision ID for clarity

The migration script's revision ID was adjusted to remove redundancy in the naming. This improves readability and ensures consistency with naming conventions.

backend/alembic/versions/0003_target_pg_stat_statements_flag.py

@@ -1,6 +1,6 @@
 """add target pg_stat_statements flag
 
-Revision ID: 0003_target_pg_stat_statements_flag
+Revision ID: 0003_pg_stat_statements_flag
 Revises: 0002_alert_definitions
 Create Date: 2026-02-12
 """
@@ -9,7 +9,7 @@ from alembic import op
 import sqlalchemy as sa
 
 
-revision = "0003_target_pg_stat_statements_flag"
+revision = "0003_pg_stat_statements_flag"
 down_revision = "0002_alert_definitions"
 branch_labels = None
 depends_on = None