Fix the broken links (#286)

Author: giraffate

src/crypto/rsa.rs

@@ -32,7 +32,7 @@ pub(crate) fn alg_to_rsa_signing(alg: Algorithm) -> &'static dyn signature::RsaE
 
 /// The actual RSA signing + encoding
 /// The key needs to be in PKCS8 format
-/// Taken from Ring doc https://briansmith.org/rustdoc/ring/signature/index.html
+/// Taken from Ring doc https://docs.rs/ring/latest/ring/signature/index.html
 pub(crate) fn sign(
     alg: &'static dyn signature::RsaEncoding,
     key: &[u8],

src/encoding.rs

@@ -34,7 +34,7 @@ impl EncodingKey {
     ///
     /// # NOTE
     ///
-    /// According to the [ring doc](https://briansmith.org/rustdoc/ring/signature/struct.RsaKeyPair.html#method.from_pkcs8),
+    /// According to the [ring doc](https://docs.rs/ring/latest/ring/signature/struct.RsaKeyPair.html#method.from_pkcs8),
     /// the key should be at least 2047 bits.
     ///
     #[cfg(feature = "use_pem")]