Merge pull request #210 from awslabs/powertools-definition-update

docs(home): update powertools definition

Author: sliedig

README.md

@@ -4,7 +4,7 @@
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-AWS Lambda Powertools for .NET (C#) is a suite of utilities for AWS Lambda functions to simplify implementation of serverless observability best practices such as tracing, structured logging, and custom metrics.
+Powertools is a developer toolkit to implement Serverless [best practices and increase developer velocity](https://awslabs.github.io/aws-lambda-powertools-dotnet/#features).
 
 **[📜 Documentation](https://awslabs.github.io/aws-lambda-powertools-dotnet/)** | **[NuGet](https://www.nuget.org/)** | **[Roadmap](https://github.com/awslabs/aws-lambda-powertools-roadmap/projects/1)** | **[Examples](#examples)**