Add missing links

design/cid_configuration.md

@@ -9,3 +9,7 @@ While BLAKE3 is faster in software, the SHA2 family is already a requirement of
 ## `base58tc`
 
 The choice of [`base58btc`] retains compatibility with common CID tools, and forces a canonical CID encoding. The other common base at time of writing is `base32`, which is popular due to its compatability with various web technologies such as subdomain handling in browsers. Unfortunately, `base32` is case-insensitive, which poses a problem for CID canonicalization since multiple CIDs map to the same underlying hash.
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+<!-- External Links -->
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+[`base58btc`]: https://github.com/multiformats/multibase/blob/master/multibase.csv#L21

design/cryptosuite.md

@@ -8,4 +8,10 @@ The NIST report on post-quantum computing will also be released in the next few
 
 ## SHA-256
 
-While BLAKE3 is faster in software, the SHA2 family is already a requirement of the signature algorithms in UCAN's cryptosuite. SHA-256 is also available effectively everywhere, and doesn't need to shipped as a separate package, which lowers implementation/maintenance complexity, and bundle size.
+While [BLAKE3] is faster in software, the SHA2 family is already a requirement of the signature algorithms in UCAN's cryptosuite. SHA-256 is also available effectively everywhere, and doesn't need to shipped as a separate package, which lowers implementation/maintenance complexity, and bundle size.
+
+<!-- External Links -->
+
+[BLAKE3]: https://github.com/BLAKE3-team/BLAKE3
+[JWT]: https://www.rfc-editor.org/rfc/rfc7519
+[WebCrypto API]: https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API