chore: fix some comments

cl/cltypes/solid/attestation_data.go

@@ -35,7 +35,7 @@ import (
 // target: 40 bytes
 const AttestationDataBufferSize = 8 + 8 + 32 + 40*2
 
-// AttestantionData contains information about attestantion, including finalized/attested checkpoints.
+// AttestationData contains information about attestantion, including finalized/attested checkpoints.
 type AttestationData []byte
 
 func NewAttestionDataFromParameters(

consensus/clique/snapshot.go

@@ -70,7 +70,7 @@ type Snapshot struct {
 	Tally   map[libcommon.Address]Tally    `json:"tally"`   // Current vote tally to avoid recalculating
 }
 
-// signersAscending implements the sort interface to allow sorting a list of addresses
+// SignersAscending implements the sort interface to allow sorting a list of addresses
 type SignersAscending []libcommon.Address
 
 func (s SignersAscending) Len() int           { return len(s) }

consensus/consensus.go

@@ -146,7 +146,7 @@ type EngineReader interface {
 	Close() error
 }
 
-// EngineReader are write methods of the consensus engine
+// EngineWriter are write methods of the consensus engine
 type EngineWriter interface {
 	// VerifyHeader checks whether a header conforms to the consensus rules of a
 	// given engine. Verifying the seal may be done optionally here, or explicitly

core/rawdb/blockio/block_writer.go

@@ -41,7 +41,7 @@ import (
 //  Prune: delete old data
 //  Unwind: delete recent data
 
-// BlockReader can read blocks from db and snapshots
+// BlockWriter can write blocks from db and snapshots
 type BlockWriter struct {
 }