chore(logs): Update logs documentation to reflect transition from alpha to beta status

Author: jonmcwest

contents/docs/logs/_snippets/beta.mdx

@@ -1,6 +1,6 @@
 import CalloutBox from 'components/Docs/CalloutBox'
 
-<CalloutBox icon="IconInfo" title="Logs is in alpha" type="fyi">
+<CalloutBox icon="IconInfo" title="Logs is in beta" type="fyi">
 
 Logs is currently in beta. To gain access, [opt-in to the beta from your feature previews menu](https://app.posthog.com/settings/user-feature-previews#logs). Logs is free to use during beta, though we'd love to [hear your feedback](https://app.posthog.com/logs#panel=support%3Afeedback%3A%3Alow%3Atrue) in app. 
 

src/pages/docs/logs/index.tsx

@@ -76,7 +76,7 @@ export const Content = () => {
                 <h2 className="mb-4 mt-0" id="pricing">
                     Pricing
                 </h2>
-                <p>Logs is currently in early alpha. While in alpha and beta, Logs is free to use.</p>
+                <p>Logs is currently in beta. While in beta, Logs is free to use.</p>
                 <p>
                     After the beta, pricing will be based on GB/ingest. We will offer 30 days standard retention. You'll
                     get 50GB ingest free each month, with discounts as your usage grows.