Moved agent components into the agent folder (#5496)

### What problem does this PR solve?



### Type of change


- [x] Documentation Update

docs/guides/agent/agent_component_reference/concentrator.mdx

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+---
+sidebar_position: 10
+slug: /concentrator_component
+---
+
+# Concentrator component
+
+A component that directs execution flow to multiple downstream components.
+
+---
+
+The **Concentrator** component acts as a "repeater" of execution flow, transmitting a flow to multiple downstream components.
+
+
+## Scenarios
+
+A **Concentrator** component enhances the current UX design. For a component originally designed to support only one downstream component, you can append a **Concentrator**, enabling it to have multiple downstream components.
+
+## Examples
+
+Explore our general-purpose chatbot agent template, featuring a **Concentrator** component (component ID: **medical**) that relays an execution flow from category 2 of the **Categorize** component to two translator components:
+
+1. Click the **Agent** tab at the top center of the page to access the **Agent** page.
+2. Click **+ Create agent** on the top right of the page to open the **agent template** page.
+3. On the **agent template** page, hover over the **General-purpose chatbot** card and click **Use this template**.
+4. Name your new agent and click **OK** to enter the workflow editor.