typos (#30604)

core/benches/retransmit_stage.rs

@@ -88,7 +88,7 @@ fn bench_retransmitter(bencher: &mut Bencher) {
 
     let leader_schedule_cache = Arc::new(LeaderScheduleCache::new_from_bank(&bank));
 
-    // To work reliably with higher values, this needs larger udp rmem size
+    // To work reliably with higher values, this needs larger udp mem size
     let entries: Vec<_> = (0..5)
         .map(|_| {
             let keypair0 = Keypair::new();

core/src/repair_service.rs

@@ -320,7 +320,7 @@ impl RepairService {
                         // correct version.
                         for (slot, _correct_hash) in slot_hash_keys_to_dump {
                             // `slot` is dumped in blockstore wanting to be repaired, we orphan it along with
-                            // descendants while copying the weighting heurstic so that it can be
+                            // descendants while copying the weighting heuristic so that it can be
                             // repaired with correct ancestor information
                             repair_weight.split_off(slot);
                         }