What does it mean "NoGCRegion is a read-only value"?

### Type of issue

Typo

### Description

From https://learn.microsoft.com/en-us/dotnet/api/system.runtime.gclatencymode?view=net-8.0#fields


Brief look at `enum` itself reveals that `NoGCRegion` is declared same as other values,, https://source.dot.net/#System.Private.CoreLib/src/libraries/System.Private.CoreLib/src/System/Runtime/GCSettings.cs,9dba3e06a9881afd.

`LatencyMode` property is what validates its inputs, https://source.dot.net/#System.Private.CoreLib/src/libraries/System.Private.CoreLib/src/System/Runtime/GCSettings.cs,44.


### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.runtime.gclatencymode?view=net-8.0#system-runtime-gclatencymode-nogcregion

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Runtime/GCLatencyMode.xml

### Document Version Independent Id

0bc21af3-3d1b-eea7-9f2f-9a0cf3045dee

### Article author

@dotnet-bot