Update a02-my-esp-crashes.rst (#3950)
Update a02-my-esp-crashes.rst (#3950)

* Update a02-my-esp-crashes.rst

Added section Other causes for crashes with ISR, Async callbacks, memory guidelines, stack.
Fixes #1388 .

* Update a02-my-esp-crashes.rst

Minor typos and text fixes

* Update a02-my-esp-crashes.rst

Fixed stack size typo

Adam5Wu/Arduino,lrmoreno007/Arduino,lrmoreno007/Arduino,lrmoreno007/Arduino,esp8266/Arduino,wemos/Arduino,Lan-Hekary/Arduino,wemos/Arduino,Adam5Wu/Arduino,sticilface/Arduino,hallard/Arduino,esp8266/Arduino,esp8266/Arduino,hallard/Arduino,wemos/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,hallard/Arduino,hallard/Arduino,esp8266/Arduino,Adam5Wu/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,lrmoreno007/Arduino,Lan-Hekary/Arduino,Lan-Hekary/Arduino,hallard/Arduino,sticilface/Arduino,wemos/Arduino,wemos/Arduino,sticilface/Arduino,Adam5Wu/Arduino,sticilface/Arduino,lrmoreno007/Arduino,Adam5Wu/Arduino