Another pass at four pages of get started guide

- Make sure that we're calling `getType` instead of deprecated `_getType()`
- Make sure that we're referencing the proper camelCase symbols instead of snake_case symbols
- Make sure that we're using proper links to the API reference
- Make sure to chain calls of StateGraph methods
- Make sure to use Zod state in all snippets

docs/docs/tutorials/get-started/1-build-basic-chatbot.md

@@ -300,7 +300,7 @@ except Exception:
 :::
 
 :::js
-You can visualize the graph using the `getGraph` method and one of the "draw" methods, like `drawMermaidPng`. The `draw` methods each require additional dependencies.
+You can visualize the graph using the `getGraph` method and render the graph with the `drawMermaidPng` method.
 
 ```typescript
 import * as fs from "node:fs/promises";