Update supporters.md (#60)

* Remove obsolete status
* Change to an unordered list

Author: chrishtr

supporters.md

@@ -1,12 +1,10 @@
 The following is a running list of organizations, and individuals outside of organizations, that participated in and support Interop 2022. If you or your oganization wish to be listed, please send a PR to add the new entry.
 
-Status: **early draft, likely incomplete or needs editing**!
-
 This list is in alphabetical order.
 
-1. Apple
-2. Bocoup
-3. Google
-4. Igalia
-5. Microsoft
-6. Mozilla
+* Apple
+* Bocoup
+* Google
+* Igalia
+* Microsoft
+* Mozilla