fix(docs): update messaging links (#703)

Author: cli-phantomxmj80p

starknet-core/src/types/msg.rs

@@ -23,7 +23,8 @@ pub struct MsgToL2 {
 impl MsgToL2 {
     /// Calculates the message hash based on the algorithm documented here:
     ///
-    /// <https://docs.starknet.io/documentation/architecture_and_concepts/L1-L2_Communication/messaging-mechanism/>
+    /// <https://docs.starknet.io/architecture-and-concepts/network-architecture/messaging-mechanism/#hashing_l1-l2>
+    /// <https://github.com/starkware-libs/cairo-lang/blob/8276ac35830148a397e1143389f23253c8b80e93/src/starkware/starknet/solidity/StarknetMessaging.sol#L88>
     pub fn hash(&self) -> Hash256 {
         let mut hasher = Keccak256::new();
 
@@ -60,7 +61,8 @@ impl MsgToL2 {
 impl MsgToL1 {
     /// Calculates the message hash based on the algorithm documented here:
     ///
-    /// <https://docs.starknet.io/documentation/architecture_and_concepts/Network_Architecture/messaging-mechanism/#structure_and_hashing_l2-l1>
+    /// <https://docs.starknet.io/architecture-and-concepts/network-architecture/messaging-mechanism/#hashing_l2-l1>
+    /// <https://github.com/starkware-libs/cairo-lang/blob/8276ac35830148a397e1143389f23253c8b80e93/src/starkware/starknet/solidity/StarknetMessaging.sol#L111>
     pub fn hash(&self) -> Hash256 {
         let mut hasher = Keccak256::new();