Fix changelog typo

Author: DustinCampbell

CHANGELOG.md

@@ -13,7 +13,7 @@
 * Properly handle .csproj projects in .sln files that were added via .NET CLI commands. ([omnisharp-roslyn#741](https://github.com/OmniSharp/omnisharp-roslyn/pull/741))
 * Fix `dotnet restore` Visual Studio Code command to execute for .csproj .NET Core projects. ([#1175](https://github.com/OmniSharp/omnisharp-vscode/issues/1175))
 * Respect `nowarn` in project.json projects. ([omnisharp#734](https://github.com/OmniSharp/omnisharp-roslyn/pull/734)) _(Contributed by [@filipw](https://github.com/filipw))_
-* Fix problem with project.json projects that wrap assemblies. ([#422](https://github.com/OmniSharp/omnisharp-vscode/issues/424))
+* Fix problem with project.json projects that wrap assemblies. ([#424](https://github.com/OmniSharp/omnisharp-vscode/issues/424))
 
 ### Debugging