Update README.md

Author: AlexanderKovalenko

README.md

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 # Dashboard for ASP.NET Core - How to change database connection in the dashboard designer using UI
 
-The main purpose of this example is to illustrate how to pass custom parameters (not [Dashboard Parameters](https://docs.devexpress.com/Dashboard/117062/web-dashboard/create-dashboards-on-the-web/data-analysis/dashboard-parameters)) to from the client side to the server to implement conditional logic for Dashboards. In this specific example we switch the database connection.
+The main purpose of this example is to illustrate how to pass custom parameters (not [Dashboard Parameters](https://docs.devexpress.com/Dashboard/117062/web-dashboard/create-dashboards-on-the-web/data-analysis/dashboard-parameters)) from the client side to the server to implement conditional logic for Dashboards. In this specific example we switch the database connection.
 
 To complete this task we add two buttons in the [Designer Toolbar](https://docs.devexpress.com/Dashboard/403426/web-dashboard/ui-elements-and-customization/designer-toolbar). Once any button is clicked, we put the custom parameter to the [AjaxRemoteService.headers](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.AjaxRemoteService#js_devexpress_dashboard_ajaxremoteservice_headers) dictionary. After that, the [DashboardControl.reloadData](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.DashboardControl#js_devexpress_dashboard_dashboardcontrol_reloaddata) method call initiates a data reloding callback (See also: [Manage an In-Memory Data Cache](https://docs.devexpress.com/Dashboard/400983/web-dashboard/dashboard-backend/manage-an-in-memory-data-cache)).
 
-On the server, the [IHttpContextAccessor](https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-context?view=aspnetcore-3.0) with dependency injection is used to access the passed working mode in code (`HttpContext.Request.Headers["database"]`) in the [DashboardConfigurator.ConfigureDataConnection](https://docs.devexpress.com/Dashboard/DevExpress.DashboardWeb.DashboardConfigurator.ConfigureDataConnection) event handler. Note that we use the [CustomStringConnectionParameters](https://docs.devexpress.com/CoreLibraries/DevExpress.DataAccess.ConnectionParameters.CustomStringConnectionParameters) class instance to initialize and apply a custom connection string in a convenient manner
+On the server, the [IHttpContextAccessor](https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-context?view=aspnetcore-3.0) with dependency injection is used to access the passed parameter value (database name) in code (`HttpContext.Request.Headers["database"]`) in the [DashboardConfigurator.ConfigureDataConnection](https://docs.devexpress.com/Dashboard/DevExpress.DashboardWeb.DashboardConfigurator.ConfigureDataConnection) event handler. Note that we use the [CustomStringConnectionParameters](https://docs.devexpress.com/CoreLibraries/DevExpress.DataAccess.ConnectionParameters.CustomStringConnectionParameters) class instance to initialize and apply a custom connection string in a convenient manner
 
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