On the "Sample app overview" page all blocks of IP address and port are shown as <manager-IP>:5000 or <manager-IP>:5001.
On this page "Try it out and vote" I see some inconsistency of these forms and fixed them, because I think the style format must be in the form "<manager-IP>:5000", e.g., colon after character ">".
finishing touches on documenting updated .yml
modifed more images and text per new .yml config
more updates to images
Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>