docs/esp8266: Clarify limitations of SSL in esp8266 and fix typos.
docs/esp8266: Clarify limitations of SSL in esp8266 and fix typos.

bvernoux/micropython,adafruit/circuitpython,henriknelson/micropython,bvernoux/micropython,bvernoux/micropython,henriknelson/micropython,adafruit/circuitpython,adafruit/circuitpython,henriknelson/micropython,adafruit/circuitpython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,adafruit/circuitpython,bvernoux/micropython,henriknelson/micropython