Change form name directive attribute to property (dotnet#34444)

Author: guardrex

aspnetcore/blazor/forms/index.md

@@ -114,13 +114,13 @@ A form is defined using the Blazor framework's <xref:Microsoft.AspNetCore.Compon
 
 In the preceding `Starship1` component:
 
-* The <xref:Microsoft.AspNetCore.Components.Forms.EditForm> component is rendered where the `<EditForm>` element appears. The form is named with the [`@formname`](xref:mvc/views/razor#formname) directive attribute, which uniquely identifies the form to the Blazor framework.
+* The <xref:Microsoft.AspNetCore.Components.Forms.EditForm> component is rendered where the `<EditForm>` element appears. The form is named with the <xref:Microsoft.AspNetCore.Components.Forms.EditForm.FormName> property, which uniquely identifies the form to the Blazor framework.
 * The model is created in the component's `@code` block and held in a public property (`Model`). The property is assigned to the <xref:Microsoft.AspNetCore.Components.Forms.EditForm.Model?displayProperty=nameWithType> parameter. The `[SupplyParameterFromForm]` attribute indicates that the value of the associated property should be supplied from the form data. Data in the request that matches the property's name is bound to the property.
 * The <xref:Microsoft.AspNetCore.Components.Forms.InputText> component is an [input component](xref:blazor/forms/input-components) for editing string values. The `@bind-Value` directive attribute binds the `Model.Id` model property to the <xref:Microsoft.AspNetCore.Components.Forms.InputText> component's <xref:Microsoft.AspNetCore.Components.Forms.InputBase%601.Value%2A> property.
 * The `Submit` method is registered as a handler for the <xref:Microsoft.AspNetCore.Components.Forms.EditForm.OnSubmit> callback. The handler is called when the form is submitted by the user.
 
 > [!IMPORTANT]
-> Always use the [`@formname`](xref:mvc/views/razor#formname) directive attribute with a unique form name.
+> Always use the <xref:Microsoft.AspNetCore.Components.Forms.EditForm.FormName> property with a unique form name.
 
 Blazor enhances page navigation and form handling for <xref:Microsoft.AspNetCore.Components.Forms.EditForm> components. For more information, see <xref:blazor/fundamentals/routing#enhanced-navigation-and-form-handling>.