feat: Add aliases

Co-authored-by: Tom Sadler <thomas.sadler@bbc.co.uk>

Author: michael-basil

patterns/2-structured/circle-communities.md

@@ -80,3 +80,8 @@ Embracing this pattern helps InnerSource programs become vibrant, effective and
 * [Allison Kaufmann](https://www.linkedin.com/in/allisonkaufmann29)
 * [Dojo Consortium](https://dojoconsortium.org)
 * [Thingy Farm](https://thingyfarm.com/)
+
+# Alias
+
+* [Community of Practice](https://en.wikipedia.org/wiki/Community_of_practice)
+* [Guilds](https://engineering.atspotify.com/2014/03/spotify-engineering-culture-part-1/)