app not working with these updated versions

[zriyansh]

i did not find a way to raise an issue hence made a PR instead

cmd - dotnet run

/Users/priyanshkhodiyar/Desktop/instrumentation/sample-dotnet-otel/Org.MyWebApp/Program.cs(9,18): error CS1061: 
'IServiceCollection' does not contain a definition for 'AddOpenTelemetryTracing' and no accessible extension method 
'AddOpenTelemetryTracing' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using 
directive or an assembly reference?) [/Users/priyanshkhodiyar/Desktop/instrumentation/sample-dotnet-
otel/Org.MyWebApp/Org.MyWebApp.csproj]

The build failed. Fix the build errors and run again.

[zriyansh]

cc - @pranay01 @prashant-shahi