This is how currently XML feed looks like in https://feedly.com/, which is a popular newsfeed reader:

As far as I understand, feed content is currently the following:
<content>## [Upstream Container Linux updates](https://github.com/coreos/manifest/releases/tag/v1772.2.0):<br><br>Security fixes:<br>- Fix Git arbitrary code execution when cloning untrusted repositories ([CVE-2018-11235](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11235))<br><br>Bug fixes:<br>- Fix inadvertent change of network interface names ([#2437](https://github.com/coreos/bugs/issues/2437))<br>- Fix failure to set network interface MTU ([#2443](https://github.com/coreos/bugs/issues/2443))<br><br>Updates:<br>- Git [2.16.4](https://raw.githubusercontent.com/git/git/v2.16.4/Documentation/RelNotes/2.16.4.txt)<br>- Linux [4.14.47](https://lwn.net/Articles/756055/)<br>Packages:<br>- docker 18.03.1<br>- ignition 0.24.1<br>- kernel 4.14.47<br>- rkt 1.30.0<br>- systemd 238<br><br>Architectures:<br>- amd64<br></content>
Which is markdown. It would be good to render this to valid HTML before injecting into content block.
This is how currently XML feed looks like in https://feedly.com/, which is a popular newsfeed reader:

As far as I understand, feed content is currently the following:
Which is markdown. It would be good to render this to valid HTML before injecting into
contentblock.