[workers-observability] update from new->beta flag

Author: rohinlohe

src/content/docs/workers/observability/logs/workers-logs.mdx

@@ -6,8 +6,7 @@ description: Store, filter, and analyze log data emitted from Cloudflare Workers
 sidebar:
   order: 2
   badge:
-    variant: tip
-    text: New
+    text: Beta
 
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