Update terms.html

Author: jandrieu

terms.html

@@ -53,7 +53,7 @@
   <dd>
 Anything that can be referenced in statements as an abstract or concrete noun.
 Entities include but are not limited to people, organizations, physical things, documents,
-abstract concepts, numbers, and strings. Any entity might perform roles
+abstract concepts, fictional characters, and arbitrary text. Any entity might perform roles
 in the ecosystem, if it is capable of doing so. Note that some
 entities fundamentally cannot take actions, e.g., the string "abc"
 cannot issue credentials. </dd>