swarm/network: fix code inspection problems

- typos
- redundant import alias

swarm/network/simulation/bucket.go

@@ -21,7 +21,7 @@ import "github.com/ethereum/go-ethereum/p2p/enode"
 // BucketKey is the type that should be used for keys in simulation buckets.
 type BucketKey string
 
-// NodeItem returns an item set in ServiceFunc function for a particualar node.
+// NodeItem returns an item set in ServiceFunc function for a particular node.
 func (s *Simulation) NodeItem(id enode.ID, key interface{}) (value interface{}, ok bool) {
 	s.mu.Lock()
 	defer s.mu.Unlock()

swarm/network/simulation/bucket_test.go

@@ -24,7 +24,7 @@ import (
 	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
 )
 
-// TestServiceBucket tests all bucket functionalities using subtests.
+// TestServiceBucket tests all bucket functionality using subtests.
 // It constructs a simulation of two nodes by adding items to their buckets
 // in ServiceFunc constructor, then by SetNodeItem. Testing UpNodesItems
 // is done by stopping one node and validating availability of its items.

swarm/network/simulation/example_test.go

@@ -25,7 +25,7 @@ import (
 
 // Every node can have a Kademlia associated using the node bucket under
 // BucketKeyKademlia key. This allows to use WaitTillHealthy to block until
-// all nodes have the their Kadmlias healthy.
+// all nodes have the their Kademlias healthy.
 func ExampleSimulation_WaitTillHealthy() {
 
 	log.Error("temporarily disabled as simulations.WaitTillHealthy cannot be trusted")

swarm/network/simulation/kademlia.go

@@ -28,7 +28,7 @@ import (
 )
 
 // BucketKeyKademlia is the key to be used for storing the kademlia
-// instance for particuar node, usually inside the ServiceFunc function.
+// instance for particular node, usually inside the ServiceFunc function.
 var BucketKeyKademlia BucketKey = "kademlia"
 
 // WaitTillHealthy is blocking until the health of all kademlias is true.

swarm/network/simulation/simulation_test.go

@@ -28,7 +28,7 @@ import (
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p/simulations"
 	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
-	colorable "github.com/mattn/go-colorable"
+	"github.com/mattn/go-colorable"
 )
 
 var (