Updated Hardware API (markdown)

Hardware-API.md

@@ -357,14 +357,14 @@ Constants:
 
 - `WLAN.STA` Station mode
 - `WLAN.AP` Access point mode
-- `WLAN.AP+STA` Access point + Station mode (sometimes called SoftAP)
+- `WLAN.STA_AP` Station mode + Access point mode.
 - `WLAN.P2P` Peer to peer (also called WiFi-direct or Ad-Hoc mode)
 - `WLAN.WEP` WEP security
 - `WLAN.WPA` WPA security
 - `WLAN.WPA2` WPA2 security
 - `WLAN.WPA_ENT` WPA Enterprise security
 
-# machine module
+# machine module functions
 
 - `machine.reset()` perform a hard reset (same as pressing the reset switch on the board)
 - `machine.enable_irq()` enable the interrupts