fix string escape sequence issue in python3.11 and >3.11

Author: kmoad

cravat/webresult/webresult.py

@@ -268,7 +268,7 @@ async def get_status (request):
     job_id, dbpath = await get_jobid_dbpath(request)
     conn = await get_db_conn(dbpath)
     cursor = await conn.cursor()
-    q = r'select * from info where colkey not like "\_%" escape "\\"'
+    q = 'select * from info where colkey not like "\\_%" escape "\\"'
     await cursor.execute(q)
     content = {}
     for row in await cursor.fetchall():