XML in C# Intellisense comments

[mattwelke]

Originally reported here.

Environment data

dotnet --info output:

.NET Command Line Tools (2.1.4)

Product Information:
 Version:            2.1.4
 Commit SHA-1 hash:  5e8add2190

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.16299
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.1.4\

Microsoft .NET Core Shared Framework Host

  Version  : 2.0.5
  Build    : 17373eb129b3b05aa18ece963f8795d65ef8ea54

VS Code version: 1.20.1
C# Extension version: 1.14.0

Steps to reproduce

1. Begin typing the name of a method to call, press tab to complete it and view comments for method in Intellisense
2. Observe the comment

Expected behavior

Intellisense comments appear without XML markup, only showing formatted comments.

Actual behavior

Intellisense comments appear with XML markup, unformatted.

Example

[akshita31]

@Welkie This is a bug with the signature help. We are already working on it in this PR : #1958.

Also this is a duplicate of #1940, hence closing it.