Peeking at Espruino Board Timers 2, 3, 4, and 5

**Made a typo in the code for PokeA0Timer5a.js **
Lines 189 thru 191 should read as follows:

//reset timer 5
 poke8(APB1RST,(peek8(APB1RST)&0xf7)|0x08);
 poke8(APB1RST,(peek8(APB1RST)^0x08));