code examples are non-specific

There are 11 flavours of constructor overload, and after each syntax explanation corresponding text says "The following code example demonstrates this StreamReader constructor" but examples for ALL flavours are listed. Thus the examples given are NON-specific to constructor overload and excessively fluffy. Please pare down to specifics to eliminate confusion.

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#### Document Details

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* ID: 08694de5-3960-b1ad-681c-0b666747f6a7
* Version Independent ID: 2edeccd6-6ad0-e708-3d0e-23901a54028d
* Content: [StreamReader Constructor (System.IO)](https://docs.microsoft.com/en-us/dotnet/api/system.io.streamreader.-ctor?view=netframework-4.7.2#System_IO_StreamReader__ctor_System_String_System_Boolean_)
* Content Source: [xml/System.IO/StreamReader.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.IO/StreamReader.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**