Update README.md (#838)
Update README.md (#838)

Typo in the go get link 
go get -u github.com/Azure/azure-sdk-for=go/storage
Updated to
go get -u github.com/Azure/azure-sdk-for-go/storage
Azure/azure-sdk-for-go,marstr/azure-sdk-for-go,Azure/azure-sdk-for-go,curoverse/azure-sdk-for-go,curoverse/azure-sdk-for-go,marstr/azure-sdk-for-go,Azure/azure-sdk-for-go,marstr/azure-sdk-for-go,Azure/azure-sdk-for-go