all: fix various comment typos (#17591)

* swarm: fixed comment typo
* eth: fixed comment typo
* cmd/puppeth: fixed comment typo

swarm/network/simulation/simulation.go

@@ -112,7 +112,7 @@ type Result struct {
 }
 
 // Run calls the RunFunc function while taking care of
-// cancelation provided through the Context.
+// cancellation provided through the Context.
 func (s *Simulation) Run(ctx context.Context, f RunFunc) (r Result) {
 	//if the option is set to run a HTTP server with the simulation,
 	//init the server and start it

swarm/network/stream/peer.go

@@ -165,7 +165,7 @@ func (p *Peer) SendOfferedHashes(s *server, f, t uint64) error {
 	if err != nil {
 		return err
 	}
-	// true only when quiting
+	// true only when quitting
 	if len(hashes) == 0 {
 		return nil
 	}

swarm/pot/doc.go

@@ -27,11 +27,11 @@ OR distance over finite set of integers).
 
 Methods take a comparison operator (pof, proximity order function) to compare two
 value types. The default pof assumes Val to be or project to a byte slice using
-the reverse rank on the MSB first XOR logarithmic disctance.
+the reverse rank on the MSB first XOR logarithmic distance.
 
 If the address space if limited, equality is defined as the maximum proximity order.
 
-The container offers applicative (funcional) style methods on PO trees:
+The container offers applicative (functional) style methods on PO trees:
 * adding/removing en element
 * swap (value based add/remove)
 * merging two PO trees (union)