Document HTML5 script,style theme support is deprecated #32861

Job	Run time
Determine Matrix	5s
Single Site Default / Test before	14m 1s
Multisite Default / Test before	14m 18s
Multisite Memcached / Test before	15m 2s
Multisite Default / Test current	15m 16s
Single Site Default / Test current	15m 4s
Multisite Memcached / Test current	14m 49s
Single Site Memcached / Test current	13m 41s
Single Site Memcached / Test before	14m 52s
Compare / Multisite Default	18s
Compare / Single Site Memcached	23s
Compare / Multisite Memcached	18s
Slack Notifications	-1s
Compare / Single Site Default	19s
Failed workflow tasks	0s
	1h 58m 25s

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