fix typo (#24123)

core/src/accounts_hash_verifier.rs

@@ -1,6 +1,6 @@
 // Service to verify accounts hashes with other known validator nodes.
 //
-// Each interval, publish the snapshat hash which is the full accounts state
+// Each interval, publish the snapshot hash which is the full accounts state
 // hash on gossip. Monitor gossip for messages from validators in the `--known-validator`s
 // set and halt the node if a mismatch is detected.