Adding in the image favicon
Adding in the image favicon

Signed-off-by: Mary Anthony <5665331b9b819ac358165f8c38970dc8c7ddb47d@docker.com>

ywarnier/docker-docs-base,mikedougherty/docs-base,moxiegirl/docs-base,thaJeztah/docs-base,sfsmithcha/docs-base,tristan0x/docs-base,mikedougherty/docs-base,SvenDowideit/docs-base,sanscontext/docs-base,moxiegirl/docs-base,tristan0x/docs-base,ywarnier/docker-docs-base,moxiegirl/docs-base,calavera/docs-base,mikedougherty/docs-base,lyndaoleary/docs-base,sanscontext/docs-base,calavera/docs-base,thaJeztah/docs-base,lyndaoleary/docs-base,sfsmithcha/docs-base,sfsmithcha/docs-base,thaJeztah/docs-base,SvenDowideit/docs-base,SvenDowideit/docs-base,sanscontext/docs-base