Fix comment

Signed-off-by: peicuiping <[email protected]>

client/v2/tx/factory.go

@@ -482,7 +482,7 @@ func (f *Factory) signMode() apitxsigning.SignMode { return f.txParams.SignMode
 // getSimPK gets the public key to use for building a simulation tx.
 // Note, we should only check for keys in the keybase if we are in simulate and execute mode,
 // e.g. when using --gas=auto.
-// When using --dry-run, we are is simulation mode only and should not check the keybase.
+// When using --dry-run, we are in simulation mode only and should not check the keybase.
 // Ref: https://github.com/cosmos/cosmos-sdk/issues/11283
 func (f *Factory) getSimPK() (cryptotypes.PubKey, error) {
 	var (