docs(fast-inbox): describe the inbox rolling-hash mechanism without a spec reference (A-1378)

Author: spalladino

l1-contracts/src/core/interfaces/messagebridge/IInbox.sol

@@ -28,7 +28,7 @@ interface IInbox {
    * fixed-size ring indexed by a dense bucket sequence number (`seq % ringSize`). A bucket only accumulates
    * messages sent within a single L1 block, so its final state is the chain position as of the end of that
    * block; the censorship check at `propose` compares the checkpoint header's rolling hash against these
-   * snapshots (AZIP-22 Fast Inbox).
+   * snapshots.
    */
   struct InboxBucket {
     // Rolling hash after the last message absorbed into this bucket. Each link is

l1-contracts/src/core/libraries/crypto/Hash.sol

@@ -53,7 +53,7 @@ library Hash {
   /**
    * @notice Advances the Inbox consensus rolling hash by one message leaf
    * @dev Truncated at every link so the value is always a field element; the rollup circuits recompute the
-   * identical chain over the message leaves they insert (AZIP-22 Fast Inbox). The genesis value is zero.
+   * identical chain over the message leaves they insert. The genesis value is zero.
    * @param _rollingHash - The current rolling hash
    * @param _leaf - The message leaf to absorb
    * @return The updated rolling hash