Fix some typos (#3376)

## Proposed Changes

This PR fixes various minor typos in the project.

beacon_node/beacon_chain/src/early_attester_cache.rs

@@ -86,7 +86,7 @@ impl<E: EthSpec> EarlyAttesterCache<E> {
     ///
     /// - There is a cache `item` present.
     /// - If `request_slot` is in the same epoch as `item.epoch`.
-    /// - If `request_index` does not exceed `item.comittee_count`.
+    /// - If `request_index` does not exceed `item.committee_count`.
     pub fn try_attest(
         &self,
         request_slot: Slot,

beacon_node/lighthouse_network/src/behaviour/gossip_cache.rs

@@ -30,9 +30,9 @@ pub struct GossipCache {
     proposer_slashing: Option<Duration>,
     /// Timeout for attester slashings.
     attester_slashing: Option<Duration>,
-    /// Timeout for aggregated sync commitee signatures.
+    /// Timeout for aggregated sync committee signatures.
     signed_contribution_and_proof: Option<Duration>,
-    /// Timeout for sync commitee messages.
+    /// Timeout for sync committee messages.
     sync_committee_message: Option<Duration>,
 }
 
@@ -51,9 +51,9 @@ pub struct GossipCacheBuilder {
     proposer_slashing: Option<Duration>,
     /// Timeout for attester slashings.
     attester_slashing: Option<Duration>,
-    /// Timeout for aggregated sync commitee signatures.
+    /// Timeout for aggregated sync committee signatures.
     signed_contribution_and_proof: Option<Duration>,
-    /// Timeout for sync commitee messages.
+    /// Timeout for sync committee messages.
     sync_committee_message: Option<Duration>,
 }
 
@@ -101,13 +101,13 @@ impl GossipCacheBuilder {
         self
     }
 
-    /// Timeout for aggregated sync commitee signatures.
+    /// Timeout for aggregated sync committee signatures.
     pub fn signed_contribution_and_proof_timeout(mut self, timeout: Duration) -> Self {
         self.signed_contribution_and_proof = Some(timeout);
         self
     }
 
-    /// Timeout for sync commitee messages.
+    /// Timeout for sync committee messages.
     pub fn sync_committee_message_timeout(mut self, timeout: Duration) -> Self {
         self.sync_committee_message = Some(timeout);
         self

beacon_node/network/src/service.rs

@@ -362,7 +362,7 @@ impl<T: BeaconChainTypes> NetworkService<T> {
                     Some(msg) = self.attestation_service.next() => self.on_attestation_service_msg(msg),
 
                     // process any sync committee service events
-                    Some(msg) = self.sync_committee_service.next() => self.on_sync_commitee_service_message(msg),
+                    Some(msg) = self.sync_committee_service.next() => self.on_sync_committee_service_message(msg),
 
                     event = self.libp2p.next_event() => self.on_libp2p_event(event, &mut shutdown_sender).await,
 
@@ -774,7 +774,7 @@ impl<T: BeaconChainTypes> NetworkService<T> {
         }
     }
 
-    fn on_sync_commitee_service_message(&mut self, msg: SubnetServiceMessage) {
+    fn on_sync_committee_service_message(&mut self, msg: SubnetServiceMessage) {
         match msg {
             SubnetServiceMessage::Subscribe(subnet) => {
                 for fork_digest in self.required_gossip_fork_digests() {