Docs: Error in nuget add package commands for dotnet sample

[michaelcostabr]

What were you searching in the docs?

Reading the documentation on how to use with dotnet, at the section Install, there are commands that doesn't work for dotnet tool
The doc suggest to use the command dotnet nuget add AWS.Lambda.Powertools.Tracing but it is invalid.
It is also wrong for the next lines, for the other packages.

Is this related to an existing documentation section?

https://awslabs.github.io/aws-lambda-powertools-dotnet/

How can we improve?

The correct syntax should be:
`dotnet add package AWS.Lambda.Powertools.Tracing`

Got a suggestion in mind?

No response

Acknowledgment

• I understand the final update might be different from my proposed suggestion, or refused.

[hjgraca]

@michaelcostabr thanks for reporting this issue. We will be updating the documentation shortly. PR #301