Update README.md (#10641)

In this file I’ve found a “project.json” occurrence that I've changed to ".csproj".

diff --git a/README.md b/README.md
index 6683a16..21dd9f7 100644 (file)
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ which is a system to package, distribute and version software components.  See [
 for more information on Nuget.   For now it is enough to know Nuget is a system that
 bundles components into `*.nupkg` files (which are ZIP archives) and these packages can be 'published' 
 either through a local file system path or by a URL (e.g. https://www.nuget.org/).   There are then tools 
-(e.g. Nuget.exe, Visual Studio, dotnet.exe) that based on a configuration file (project.json) know 
+(e.g. Nuget.exe, Visual Studio, dotnet.exe) that based on a configuration file (.csproj) know 
 how to search these publishing locations and pull down consistent set of packages for the 
 application.