VarPop VarPush description slightly off

### Type of issue

Missing information

### Description

For VarPop, Documentation says: "Pops a variable off the stack"
Correct is: "Pops a variable number of arguments off the stack".
A "Variable" is not a defined item here.

Same for VarPush.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.reflection.emit.stackbehaviour?view=netframework-4.8&devlangs=csharp&f1url=%3FappId%3DDev17IDEF1%26l%3DEN-US%26k%3Dk(System.Reflection.Emit.StackBehaviour.Varpush)%3Bk(TargetFrameworkMoniker-.NETFramework%2CVersion%253Dv4.8)%3Bk(DevLang-csharp)%26rd%3Dtrue

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Reflection.Emit/StackBehaviour.xml

### Document Version Independent Id

86726142-7ce7-78ba-ea73-fe7644a94eb4

### Platform Id

fd904241-7cb4-59a6-a05b-98c9bfb07652

### Article author

@dotnet-bot