Typo is S3 file upload v2 causes handler to always fail during initialization

[Stormborg]

peripherals-aws-s3/handlers/amazon_s3_file_upload_v2/handler/init.rb

Line 39 in 2bfb1fa

aws_config[:endpoint] = @endpoing if !@endpoint.nil?

Resulting handler error message in KD run:

missing required option `:endpoint'