docs: share doc edit

packages/web/src/content/docs/docs/share.mdx

@@ -17,7 +17,7 @@ When you share a conversation, opencode:
 
 1. Creates a unique public URL for your session
 2. Syncs your conversation history to our servers
-3. Makes the conversation accessible via the shareable link
+3. Makes the conversation accessible via the shareable link — `opencode.ai/s/<share-id>`
 
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