fix(site): move docs link to primary header on observability page (#25313)

Move the "Read the docs" button from the Audit Logging subsection up to
the primary Observability header's `actions` prop, matching the layout
pattern used by General, Network, and other deployment settings pages.

Also updates the docs URL from `/admin/security/audit-logs` to
`/admin/monitoring` to reflect the page-level scope.

> Generated by Coder Agents on behalf of @designertyler

---------

Co-authored-by: TJ <tracy@coder.com>

site/src/pages/DeploymentSettingsPage/ObservabilitySettingsPage/ObservabilitySettingsPageView.tsx

@@ -33,15 +33,13 @@ export const ObservabilitySettingsPageView: FC<
 	return (
 		<div className="flex flex-col gap-12">
 			<div>
-				<SettingsHeader>
+				<SettingsHeader
+					actions={<SettingsHeaderDocsLink href={docs("/admin/monitoring")} />}
+				>
 					<SettingsHeaderTitle>Observability</SettingsHeaderTitle>
 				</SettingsHeader>
 
-				<SettingsHeader
-					actions={
-						<SettingsHeaderDocsLink href={docs("/admin/security/audit-logs")} />
-					}
-				>
+				<SettingsHeader>
 					<SettingsHeaderTitle hierarchy="secondary" level="h2">
 						Audit Logging
 					</SettingsHeaderTitle>