Fix link check (#4074)

Closes #4041

Changes:
- Increase cache size and reduce retries.
- Ignore Substrate SE links :(
- Fix broken link.

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

.config/lychee.toml

@@ -2,9 +2,9 @@
 # Run with `lychee -c .config/lychee.toml ./**/*.rs ./**/*.prdoc`
 
 cache = true
-max_cache_age = "1d"
+max_cache_age = "10d"
 max_redirects = 10
-max_retries = 6
+max_retries = 3
 
 # Exclude localhost et.al.
 exclude_all_private = true
@@ -51,4 +51,7 @@ exclude = [
 	# Behind a captcha (code 403):
 	"https://iohk.io/en/blog/posts/2023/11/03/partner-chains-are-coming-to-cardano/",
 	"https://www.reddit.com/r/rust/comments/3spfh1/does_collect_allocate_more_than_once_while/",
+	# 403 rate limited:
+	"https://etherscan.io/block/11090290",
+	"https://substrate.stackexchange.com/.*",
 ]

substrate/client/network/types/src/peer_id.rs

@@ -97,7 +97,7 @@ impl PeerId {
 	/// Convert `PeerId` into ed25519 public key bytes.
 	pub fn into_ed25519(&self) -> Option<[u8; 32]> {
 		let hash = &self.multihash;
-		// https://www.ietf.org/id/draft-multiformats-multihash-07.html#name-the-multihash-identifier-re
+		// https://www.ietf.org/archive/id/draft-multiformats-multihash-07.html#name-the-multihash-identifier-re
 		if hash.code() != 0 {
 			// Hash is not identity
 			return None