chore: fix errros format

Author: ginokent

database/sql/db.go

@@ -22,6 +22,7 @@ func OpenContext(ctx context.Context, driverName string, dataSourceName string)
 func MustOpenContext(ctx context.Context, driverName string, dataSourceName string) *sql.DB {
 	db, err := OpenContext(ctx, driverName, dataSourceName)
 	if err != nil {
+		err = fmt.Errorf("OpenContext: %w", err)
 		panic(err)
 	}
 

database/sql/tx.go

@@ -3,11 +3,13 @@ package sqlz
 import (
 	"context"
 	"database/sql"
+	"fmt"
 )
 
 func MustBeginTx(ctx context.Context, db sqlTxBeginner, opts *sql.TxOptions) *sql.Tx {
 	tx, err := db.BeginTx(ctx, opts)
 	if err != nil {
+		err = fmt.Errorf("BeginTx: %w", err)
 		panic(err)
 	}
 	return tx