[CP] fix some spelling errors

src/rootserver/ob_balance_info.h

@@ -1306,7 +1306,7 @@ const static char* const MIGRATE_PG_REPLICA = "migrate pg replica";
 const static char* const REPLICATE_PERMANENT_OFFLINE_REPLICA = "replicate permanent offline replica";
 const static char* const MIGRATE_ONLY_IN_MEMBERLIST_REPLICA = "migrate only in memberlist replica";
 const static char* const REBUILD_ONLY_IN_MEMBERLIST_REPLICA = "add replica only in memberlist replica";
-const static char* const MANUAL_MIGRATE_UNIT = "migrete replica due to admin migrate unit";
+const static char* const MANUAL_MIGRATE_UNIT = "migrate replica due to admin migrate unit";
 const static char* const REPLICATE_ENOUGH_REPLICA = "replicate enough replica";
 const static char* const REPLICATE_ENOUGH_SPECIFIC_REPLICA = "replicate enough logonly replica on logonly unit";
 const static char* const FAST_RECOVERY_TASK = "fast recovery task";