move wiki -> docs (#10225)

Co-authored-by: Dan Shields <danwshields@gmail.com>

substrate/bin/utils/subkey/README.md

@@ -69,7 +69,7 @@ The output above also show the **public key** and the **Account ID**. Those are
 
 The **SS58 address** (or **Public Address**) of a new account is a reprensentation of the public keys of an account for a given network (for instance Kusama or Polkadot).
 
-You can read more about the SS58 format in the [substrate wiki](https://github.com/paritytech/substrate/wiki/External-Address-Format-(SS58)) and see the list of reserved prefixes in the [Polkadot wiki](https://wiki.polkadot.network/docs/build-ss58-registry).
+You can read more about the SS58 format in the [Substrate Docs](https://docs.substrate.io/v3/advanced/ss58/) and see the list of reserved prefixes in the [SS58 Registry](https://github.com/paritytech/ss58-registry).
 
 For instance, considering the previous seed `0xa05c75731970cc7868a2fb7cb577353cd5b31f62dccced92c441acd8fee0c92d` the SS58 addresses are:
 

substrate/client/cli/src/commands/run_cmd.rs

@@ -58,7 +58,7 @@ pub struct RunCmd {
 	///
 	/// Default is local. Note: not all RPC methods are safe to be exposed publicly. Use an RPC
 	/// proxy server to filter out dangerous methods. More details:
-	/// <https://github.com/paritytech/substrate/wiki/Public-RPC>.
+	/// <https://docs.substrate.io/v3/runtime/custom-rpcs/#public-rpcs>.
 	/// Use `--unsafe-rpc-external` to suppress the warning if you understand the risks.
 	#[structopt(long = "rpc-external")]
 	pub rpc_external: bool,
@@ -89,7 +89,7 @@ pub struct RunCmd {
 	///
 	/// Default is local. Note: not all RPC methods are safe to be exposed publicly. Use an RPC
 	/// proxy server to filter out dangerous methods. More details:
-	/// <https://github.com/paritytech/substrate/wiki/Public-RPC>.
+	/// <https://docs.substrate.io/v3/runtime/custom-rpcs/#public-rpcs>.
 	/// Use `--unsafe-ws-external` to suppress the warning if you understand the risks.
 	#[structopt(long = "ws-external")]
 	pub ws_external: bool,

substrate/primitives/core/src/crypto.rs

@@ -219,7 +219,7 @@ pub enum PublicError {
 
 /// Key that can be encoded to/from SS58.
 ///
-/// See <https://github.com/paritytech/substrate/wiki/External-Address-Format-(SS58)#address-type>
+/// See <https://docs.substrate.io/v3/advanced/ss58/>
 /// for information on the codec.
 #[cfg(feature = "full_crypto")]
 pub trait Ss58Codec: Sized + AsMut<[u8]> + AsRef<[u8]> + Default {