Updated docs to clarify that Content-MD5 should not be provided
Updated docs to clarify that Content-MD5 should not be provided

mapbox/aws-sdk-js,jeskew/aws-sdk-js,jeskew/aws-sdk-js,LiuJoyceC/aws-sdk-js,aws/aws-sdk-js,LiuJoyceC/aws-sdk-js,GlideMe/aws-sdk-js,chrisradek/aws-sdk-js,chrisradek/aws-sdk-js,grimurjonsson/aws-sdk-js,aws/aws-sdk-js,GlideMe/aws-sdk-js,guymguym/aws-sdk-js,guymguym/aws-sdk-js,aws/aws-sdk-js,chrisradek/aws-sdk-js,jeskew/aws-sdk-js,LiuJoyceC/aws-sdk-js,mapbox/aws-sdk-js,mapbox/aws-sdk-js,GlideMe/aws-sdk-js,jeskew/aws-sdk-js,grimurjonsson/aws-sdk-js,guymguym/aws-sdk-js,aws/aws-sdk-js,chrisradek/aws-sdk-js,grimurjonsson/aws-sdk-js,guymguym/aws-sdk-js,GlideMe/aws-sdk-js