Doc: Updated sharing behavior in the open-source editions. (#7293)

### What problem does this PR solve?


### Type of change


- [x] Documentation Update

docs/guides/team/share_agents.md

@@ -0,0 +1,23 @@
+---
+sidebar_position: 3
+slug: /share_agent
+---
+
+# Share Agent
+
+Share an Agent with your team members.
+
+---
+
+When ready, you may share your Agents with your team members so that they can use them. Please note that your Agents are not shared automatically; you must manually enable sharing by selecting the corresponding **Permissions** radio button:
+
+1. Click the intended Agent to open its editing canvas. 
+2. Click **Settings** to show the **Agent settings** dialogue.
+3. Change **Permissions** from **Only me** to **Team**.
+4. Click **Save** to apply your changes.
+
+![share_agent](https://raw.githubusercontent.com/infiniflow/ragflow-docs/main/images/share_agent.jpg)
+
+*When completed, your team members will see your shared Agents like this:*
+
+![shared_agent](https://raw.githubusercontent.com/infiniflow/ragflow-docs/main/images/shared_agent.jpg)