Fix format egress https blog (#949)
Fix format egress https blog (#949)

* replaced istio.io with {{home}}

* fixed capitalization - lower case letters in section headings

istio/istio.io,linsun/istio.github.io,geeknoid/istio.github.io,jasminejaksic/istio.github.io,ZackButcher/istio.github.io,istio/istio.io,geeknoid/istio.github.io,linsun/istio.github.io,linsun/istio.github.io,istio/istio.io,jasminejaksic/istio.github.io,jasminejaksic/istio.github.io,ZackButcher/istio.github.io,geeknoid/istio.github.io,istio/istio.io,geeknoid/istio.github.io,geeknoid/istio.github.io,istio/istio.io,istio/istio.io,linsun/istio.github.io,jasminejaksic/istio.github.io,ZackButcher/istio.github.io,istio/istio.io,ZackButcher/istio.github.io,linsun/istio.github.io