chore: fix some function names in comment

pkg/accounting/accounting.go

@@ -1498,7 +1498,7 @@ func (a *Accounting) decreaseOriginatedBalanceTo(peer swarm.Address, limit *big.
 	return nil
 }
 
-// decreaseOriginatedBalanceTo decreases the originated balance by provided amount even below 0
+// decreaseOriginatedBalanceBy decreases the originated balance by provided amount even below 0
 func (a *Accounting) decreaseOriginatedBalanceBy(peer swarm.Address, amount *big.Int) error {
 	loggerV2 := a.logger.V(2).Register()
 

pkg/accounting/accounting_test.go

@@ -182,7 +182,7 @@ func TestAccountingAddBalance(t *testing.T) {
 	}
 }
 
-// TestAccountingAddBalance does several accounting actions and verifies the balance after each steep
+// TestAccountingAddOriginatedBalance does several accounting actions and verifies the balance after each steep
 func TestAccountingAddOriginatedBalance(t *testing.T) {
 	t.Parallel()
 
@@ -415,7 +415,7 @@ func TestAccountingReserve(t *testing.T) {
 	}
 }
 
-// TestAccountingReserve tests that reserve returns an error if the payment threshold would be exceeded,
+// TestAccountingReserveAheadOfTime tests that reserve returns an error if the payment threshold would be exceeded,
 // but extends this limit by 'n' (max 2) seconds worth of refresh rate if last refreshment was 'n' seconds ago.
 func TestAccountingReserveAheadOfTime(t *testing.T) {
 	t.Parallel()
@@ -1196,7 +1196,7 @@ func TestAccountingSurplusBalance(t *testing.T) {
 	}
 }
 
-// TestAccountingNotifyPayment tests that payments adjust the balance
+// TestAccountingNotifyPaymentReceived tests that payments adjust the balance
 func TestAccountingNotifyPaymentReceived(t *testing.T) {
 	t.Parallel()