Fix moniker range + nits (#20016)

Author: guardrex

aspnetcore/mvc/models/model-binding.md

@@ -378,16 +378,18 @@ For `Dictionary` targets, model binding looks for matches to *parameter_name* or
 
   * selectedCourses["1050"]="Chemistry"
   * selectedCourses["2000"]="Economics"
+  
+::: moniker-end
 
-::: moniker range="> aspnetcore-5.0"
+::: moniker range=">= aspnetcore-5.0"
 
 ## Constructor binding and record types
 
-Model binding requires that complex types have a parameterless constructor. Both `System.Text.Json` and `Newtonsoft.Json` based input formatters support deserialization of classes that do not have a parameterless constructor. 
+Model binding requires that complex types have a parameterless constructor. Both `System.Text.Json` and `Newtonsoft.Json` based input formatters support deserialization of classes that don't have a parameterless constructor. 
 
-C# 9 introduces record types which are a great way to succintly represent data over the network. ASP.NET Core adds support for model binding and validating record types with a single constructor.
+C# 9 introduces record types, which are a great way to succinctly represent data over the network. ASP.NET Core adds support for model binding and validating record types with a single constructor:
 
-```C#
+```csharp
 public record Person([Required] string Name, [Range(0, 150)] int Age);
 
 public class PersonController
@@ -397,23 +399,29 @@ public class PersonController
    [HttpPost]
    public IActionResult Index(Person person)
    {
-          // ...
+       ...
    }
 }
+```
+
+`Person/Index.cshtml`:
 
-// Person/Index.cshtml
+```cshtml
 @model Person
 
 Name: <input asp-for="Name" />
 ...
 Age: <input asp-for="Age" />
 ```
 
-When validating record types, the runtime looks for validation metadata specifically on parameters rather than on properties.
+When validating record types, the runtime searches for validation metadata specifically on parameters rather than on properties.
 
 ::: moniker-end
 
+::: moniker range=">= aspnetcore-3.0"
+
 <a name="glob"></a>
+
 ## Globalization behavior of model binding route data and query strings
 
 The ASP.NET Core route value provider and query string value provider:
@@ -530,6 +538,7 @@ This attribute's name follows the pattern of model binding attributes that speci
 * <xref:mvc/advanced/custom-model-binding>
 
 ::: moniker-end
+
 ::: moniker range="< aspnetcore-3.0"
 
 This article explains what model binding is, how it works, and how to customize its behavior.