add more spacing in advanced tab of flows

frontend/src/lib/components/flows/content/FlowModuleCache.svelte

@@ -10,7 +10,7 @@
 	$: isCacheEnabled = Boolean(flowModule.cache_ttl)
 </script>
 
-<h2>
+<h2 class="pb-4">
 	Cache
 	<Tooltip documentationLink="https://docs.windmill.dev/docs/flows/flow_approval">
 		If defined, the result of the step will be cached for the number of seconds defined such that if

frontend/src/lib/components/flows/content/FlowModuleEarlyStop.svelte

@@ -20,7 +20,7 @@
 </script>
 
 <div class="flex flex-col items-start space-y-2 {$$props.class}">
-	<h2>
+	<h2 class="pb-4">
 		Early stop/Break
 		<Tooltip documentationLink="https://docs.windmill.dev/docs/flows/early_stop">
 			If defined, at the end of the step, the predicate expression will be evaluated to decide if

frontend/src/lib/components/flows/content/FlowModuleSleep.svelte

@@ -27,7 +27,7 @@
 	$: isSleepEnabled = Boolean(flowModule.sleep)
 </script>
 
-<h2>
+<h2 class="pb-4">
 	Sleep
 	<Tooltip documentationLink="https://docs.windmill.dev/docs/flows/sleep">
 		If defined, at the end of the step, the flow will sleep for a number of seconds before

frontend/src/lib/components/flows/content/FlowModuleSuspend.svelte

@@ -10,7 +10,7 @@
 	$: isSuspendEnabled = Boolean(flowModule.suspend)
 </script>
 
-<h2>
+<h2 class="pb-4">
 	Suspend
 	<Tooltip documentationLink="https://docs.windmill.dev/docs/flows/flow_approval">
 		If defined, at the end of the step, the flow will be suspended until it receives external