NO-JIRA: bug(metrics): fix typo in `hypershift_cluster_waiting_initial_availability_duration_seconds` metric #7730

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Status	Duration	Name
🟢 Succeeded	10 seconds	init
🟢 Succeeded	45 seconds	clone-repository
🟢 Succeeded	10 seconds	prefetch-dependencies
🟢 Succeeded	15 minutes	build-images
🟢 Succeeded	15 seconds	build-image-index
🟢 Succeeded	1 minute	build-source-image
🟢 Succeeded	13 seconds	deprecated-base-image-check
🟢 Succeeded	1 minute	clamav-scan
🟢 Succeeded	24 seconds	sast-snyk-check
🟢 Succeeded	40 seconds	clair-scan
🟢 Succeeded	7 seconds	coverity-availability-check
🟢 Succeeded	1 minute	sast-unicode-check
🟢 Succeeded	17 seconds	sast-shell-check
🟢 Succeeded	43 seconds	ecosystem-cert-preflight-checks
🟢 Succeeded	13 seconds	push-dockerfile
🟢 Succeeded	5 seconds	apply-tags
🟢 Succeeded	30 seconds	rpms-signature-scan
🟢 Succeeded	11 seconds	show-sbom