Bulk-configuring a value converter sample code typo

### Type of issue

Typo

### Description

In the usage example for the `Bulk-configuring a value converter` the code contains `.HaveConversion<...` instead of `.HasConversion<...`.

The code with the typo:
```c#
protected override void ConfigureConventions(ModelConfigurationBuilder configurationBuilder)
{
configurationBuilder
.Properties()
.HaveConversion();
}
```

The correct version:
```c#
protected override void ConfigureConventions(ModelConfigurationBuilder configurationBuilder)
{
configurationBuilder
.Properties()
.HasConversion();
}
```

### Page URL

https://learn.microsoft.com/en-us/ef/core/modeling/value-conversions?tabs=data-annotations

### Content source URL

https://github.com/dotnet/EntityFramework.Docs/blob/main/entity-framework/core/modeling/value-conversions.md

### Document Version Independent Id

a26156d1-a4b3-7df0-e63e-b8e9f804abbf

### Article author

@ajcvickers