Fix spelling typos in readme.rst (#7447)
Fix spelling typos in readme.rst (#7447)

This patch fixes some spelling typos in doc/esp8266wifi/readme.rst

Co-authored-by: Earle F. Philhower, III <b975f4b1c5caae6e97f4176d8d8fd74a76ae1551@yahoo.com>
esp8266/Arduino,esp8266/Arduino,sticilface/Arduino,sticilface/Arduino,sticilface/Arduino,esp8266/Arduino,sticilface/Arduino,esp8266/Arduino,sticilface/Arduino,esp8266/Arduino