Update freebuff copy on web/readme #5923

Job	Run time
build-and-check	3m 11s
test-integration-packages/billing	1m 5s
test-integration-packages/internal	1m 12s
test-integration-web	47s
test-integration-sdk	1m 19s
test-integration-common	48s
test-integration-packages/agent-runtime	48s
test-integration-cli	41s
test-packages/billing	47s
test-cli	47s
test-web	1m 1s
test-common	43s
test-sdk	39s
test-packages/internal	54s
test-packages/agent-runtime	48s
test-.agents	46s
	16m 16s

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