aws/ec2metadata: Update documentation for GetMetadata and GetDynamicData
aws/ec2metadata: Update documentation for GetMetadata and GetDynamicData

myshen/aws-sdk-go,zmarois/aws-sdk-go,myshen/aws-sdk-go,xibz/aws-sdk-go,jasdel/aws-sdk-go,zmarois/aws-sdk-go,agworld/aws-sdk-go,jjeffery/aws-sdk-go,xibz/aws-sdk-go,zmarois/aws-sdk-go,agworld/aws-sdk-go,myshen/aws-sdk-go,yxd-hde/aws-sdk-go,xibz/aws-sdk-go,agworld/aws-sdk-go,yxd-hde/aws-sdk-go,radeksimko/aws-sdk-go,yxd-hde/aws-sdk-go,jjeffery/aws-sdk-go,calgaryscientific/aws-sdk-go,yxd-hde/aws-sdk-go,calgaryscientific/aws-sdk-go,myshen/aws-sdk-go,agworld/aws-sdk-go,radeksimko/aws-sdk-go,calgaryscientific/aws-sdk-go,calgaryscientific/aws-sdk-go,zmarois/aws-sdk-go,xibz/aws-sdk-go,aws/aws-sdk-go,radeksimko/aws-sdk-go,jjeffery/aws-sdk-go,radeksimko/aws-sdk-go