fix DatabaseManagementSystem.SQLite default connection string

framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/ConnectionStringProvider.cs

@@ -21,7 +21,7 @@ namespace Volo.Abp.Cli.Commands.Services
                 case DatabaseManagementSystem.OracleDevart:
                     return "Data Source=MyProjectName;Integrated Security=yes;";
                 case DatabaseManagementSystem.SQLite:
-                    return $"Data Source={Path.Combine(outputFolder,"database\\MyProjectName.db")};Version=3;";
+                    return $"Data Source={Path.Combine(outputFolder , "MyProjectName.db")};".Replace("\\", "\\\\");
                 default:
                     return null;
             }