chore(contributing): update the contributing guide to include previewing changes #293

Job	Run time
build	51s
test-legacy (ionic-angular)	4m 2s
test-legacy (ionic1)	21s
test (vue-vite-official-blank)	1m 50s
test (vue-vite-official-list)	1m 31s
test (vue-vite-official-tabs)	1m 35s
test (vue-vite-official-sidemenu)	1m 47s
test (vue-official-blank)	1m 44s
test (vue-official-list)	1m 54s
test (vue-official-tabs)	1m 26s
test (vue-official-sidemenu)	1m 34s
test (react-vite-official-blank)	2m 7s
test (react-vite-official-list)	2m 0s
test (react-vite-official-tabs)	1m 43s
test (react-vite-official-sidemenu)	2m 8s
test (react-official-blank)	1m 39s
test (react-official-list)	1m 21s
test (react-official-tabs)	1m 42s
test (react-official-sidemenu)	1m 44s
test (angular-standalone-official-blank)	2m 4s
test (angular-standalone-official-list)	2m 14s
test (angular-standalone-official-tabs)	2m 1s
test (angular-standalone-official-sidemenu)	2m 36s
test (angular-official-blank)	2m 37s
test (angular-official-list)	1m 56s
test (angular-official-tabs)	2m 4s
test (angular-official-sidemenu)	2m 12s
verify-test	1s
deploy	0s
verify-test-legacy	1s
	50m 45s

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