chore: fix grammar mistakes in code comments (#3461)

Author: myetcd

pkg/genesis/genesis.go

@@ -18,7 +18,7 @@ type Genesis struct {
 	// DAStartHeight corresponds to the height at which the first DA header/data has been published.
 	// This value is meant to be updated after genesis and shared to all syncing nodes for speeding up syncing via DA.
 	DAStartHeight uint64 `json:"da_start_height"`
-	// DaEpochForcedInclusion corresponds to the amount of DA blocks are considered an epoch
+	// DaEpochForcedInclusion corresponds to the number of DA blocks that make up an epoch
 	// When forced inclusion is enabled, the epoch size determines at what frequency the forced included transactions are executed by the application.
 	DAEpochForcedInclusion uint64 `json:"da_epoch_forced_inclusion"`
 }

types/signed_header_test.go

@@ -59,7 +59,7 @@ func testVerify(t *testing.T, trusted *SignedHeader, untrustedAdj *SignedHeader,
 			},
 		},
 		// 2. Test non-adjacent
-		// increments the BaseHeader.Height so it's headers are non-adjacent
+		// increments the BaseHeader.Height so its headers are non-adjacent
 		// Expect success
 		{
 			prepare: func() (*SignedHeader, bool) {