Quibbles about the text

### Type of issue

Typo

### Description

The text for "ArgumentOutOfRangeException" refers to "The number of characters in the next line" which is surely a copy/paste from ReadLine. There is no 'line' if we're reading the entire remainder of the file.

Also, the 'Returns' text should steal this part from StreamReader.ReadToEnd:

> If the current position is at the end of the stream, returns an empty string ("").

I assume that's the intent for TextReader too.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.io.textreader.readtoend?view=net-9.0

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.IO/TextReader.xml

### Document Version Independent Id

979313f5-fa53-eae7-b87f-dc6f1e854dd2

### Platform Id

f8bb511e-8bf0-fee3-60c9-8f2b54618f30

### Article author

@dotnet-bot