Update README.rst #188

Job	Run time
Building tests/esp32-arduino-hon-ethernet.yaml	1m 49s
Building tests/esp32-arduino-hon-wifi.yaml	1m 59s
Building tests/esp32-arduino-smartair2-ethernet.yaml	1m 52s
Building tests/esp32-arduino-smartair2-wifi.yaml	1m 42s
Building tests/esp32-idf-hon-ethernet.yaml	2m 54s
Building tests/esp32-idf-hon-wifi.yaml	2m 56s
Building tests/esp32-idf-smartair2-ethernet.yaml	2m 39s
Building tests/esp32-idf-smartair2-wifi.yaml	2m 46s
Building tests/esp8266-hon-wifi.yaml	1m 47s
Building tests/esp8266-smartair2-wifi.yaml	1m 49s
Building tests/rpipicow-hon-wifi.yaml	1m 43s
Building tests/rpipicow-smartair2-wifi.yaml	1m 44s
Building tests/esp8266-simple-smartair2.yaml	1m 33s
Building tests/esp8266-simple-hon.yaml	1m 41s
Building tests/libretiny-hon.yaml	2m 3s
Building tests/libretiny-smartair2.yaml	1m 56s
	32m 53s

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