Wrong Summary & Return Value Descriptions for BigInteger.MinMagnitude & BigInteger.MaxMagnitude

[BigInteger.MinMagnitude](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.minmagnitude?view=net-8.0) reads:
**Summary:** *Compares two values to compute which is lesser.*

**x**
*The value to compare with y.*
**y**
*The value to compare with x.*

**Returns:** *x if it is less than y; otherwise, y.*

This would indicate the method is no different than [Min](BigInteger.Min).

Instead, **MinMagnitude** should be:

**Summary:** *Returns the [BigInteger](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger?view=net-8.0) with the smallest absolute value.*

**Returns:** *The [BigInteger](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger?view=net-8.0) with the smallest absolute value. If the absolute values are equal, returns `x` if `x` < `0` and `y` if `x` >= 0.*

[BigInteger.MaxMagnitude](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.maxmagnitude?view=net-8.0) documentation has the same issue.