➕ Added sub-terms to "Racism" (#336)

* Added sub-terms to "Racism"

* Update 11ty/definitions/racism.md

Co-authored-by: Tatiana Mac <github@tatianamac.com>

Author: kittensyzygy

11ty/definitions/racism.md

@@ -5,4 +5,13 @@ defined: false
 flag:
   level: warning
   text: content warning
----
+sub_terms:
+  - text: internalised
+    full_title: internalised racism
+  - text: interpersonal
+    full_title: interpersonal racism
+  - text: institutional
+    full_title: institutional racism
+  - text: structural
+    full_title: structural racism
+---