Changed occurences of 'docker' to 'Docker' to be in accordance
with Docker Inc's trademark guidelines found here:
https://www.docker.com/trademark-guidelines
This was done due to a pending change that will append Docker
Inc's trademark notice in the kolla docs
TrivialFix
Change-Id: Ie3f385897bfa604986bd99329c0f4b961d3c8552
manila-hnas-guide.rst, kuryr-guide.rst and production-architecture-guide.rst
some character error, update these error
Change-Id: I1ec8594af6cd6c29e40c7f0af331c6868a03877b