fix typos

Signed-off-by: Shawn Smith <shawnpsmith@gmail.com>

control/controlclient/direct_test.go

@@ -225,7 +225,7 @@ func TestClientsReusingOldKey(t *testing.T) {
 		persist2 = p
 	}
 
-	// Here we simulate a client using using old persistant data.
+	// Here we simulate a client using using old persistent data.
 	// We use the key we have already replaced as the old node key.
 	// This requires the user to authenticate.
 	persist3 := Persist{

ipn/e2e_test.go

@@ -74,7 +74,7 @@ func TestIPN(t *testing.T) {
 
 		// TODO(crawshaw): switch from || to &&. To do this we need to
 		// transmit some data so that the handshake completes on both
-		// sides. (Beacuse handshakes are 1RTT, it is the data
+		// sides. (Because handshakes are 1RTT, it is the data
 		// transmission that completes the handshake.)
 		if s1 == Running || s2 == Running {
 			// TODO(apenwarr): ensure state sequence.