Update Freebuff limited mode FAQ #706

Job	Run time
build-freebuff	1m 20s
build-and-smoke-freebuff-windows	2m 39s
e2e-version	1m 2s
e2e-startup	1m 9s
e2e-agent-startup	2m 4s
e2e-slash-commands	52s
e2e-code-edit	53s
e2e-help-command	1m 7s
e2e-terminal-command	53s
e2e-ads-behavior	1m 13s
	13m 12s

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