Update wifi.Radio.connect doc

[tannewt]

Now it includes bssid info.

cc @BennyE @astrobokonon

[BennyE]

If "config->sta.bssid_set = true;" (or false) is being used, this will make the following line always go to else (or not?) :

Line 147:
if ((config->sta.bssid_set == 0) && (config->sta.channel == 0)) {

[tannewt]

If "config->sta.bssid_set = true;" (or false) is being used, this will make the following line always go to else (or not?) :

Line 147:
if ((config->sta.bssid_set == 0) && (config->sta.channel == 0)) {

bools are ints under the hood. So it works the same. https://en.wikipedia.org/wiki/C_data_types#stdbool.h