fix: add custom domain CNAME

otherwise the custom domain will be constantly reset e.g.,

https://stackoverflow.com/questions/67183664/why-is-my-github-pages-custom-domain-constantly-reset

Relevant hugo docs:

https://gohugo.io/hosting-and-deployment/hosting-on-github/#use-a-custom-domain

Author: alee

…t/executive-committee/iestyn-woolway.JPG …t/executive-committee/iestyn-woolway.jpgcontent/en/about/executive-committee/iestyn-woolway.JPG renamed to content/en/about/executive-committee/iestyn-woolway.jpg content/en/about/executive-committee/iestyn-woolway.JPG renamed to content/en/about/executive-committee/iestyn-woolway.jpg

@@ -0,0 +1 @@
+www.openmodelingfoundation.org