chore: fetch content from various external sources

Author: actions-user

docs/04_glossary/self-certifying-identifier.md

@@ -1,7 +1,7 @@
 # self certifying identifier
 ## Definition
 
-A Self-Certifying Identifier (SCID) cryptographically binds an identifier to a public and private key pair. It is an identifier that can be proven to be the one and only identifier tied to a public key using cryptography alone.
+A Self-Certifying Identifier (SCID) cryptographically binds an identifier to one or more public/private key pairs. It is an identifier that can be proven to be the one and only identifier tied to a public key using cryptography alone.
 
 ## Signing