Added a guide on setting chat variables (#6904)

### What problem does this PR solve?



### Type of change

- [x] Documentation Update

docs/quickstart.mdx

@@ -302,7 +302,7 @@ Once you have selected an embedding model and used it to parse a file, you are n
    _When the file parsing completes, its parsing status changes to **SUCCESS**._
 
 :::caution NOTE 
-- If your file parsing gets stuck at below 1%, see [this FAQ](./faq.mdxfaq#why-does-my-document-parsing-stall-at-under-one-percent).
+- If your file parsing gets stuck at below 1%, see [this FAQ](./faq.mdx#why-does-my-document-parsing-stall-at-under-one-percent).
 - If your file parsing gets stuck at near completion, see [this FAQ](./faq.mdx#why-does-my-pdf-parsing-stall-near-completion-while-the-log-does-not-show-any-error)
 :::
 
@@ -339,16 +339,16 @@ Conversations in RAGFlow are based on a particular knowledge base or multiple kn
 1. Click the **Chat** tab in the middle top of the mage **>** **Create an assistant** to show the **Chat Configuration** dialogue *of your next dialogue*.
    > RAGFlow offer the flexibility of choosing a different chat model for each dialogue, while allowing you to set the default models in **System Model Settings**.
 
-2. Update **Assistant Setting**:
+2. Update **Assistant settings**:
 
    - Name your assistant and specify your knowledge bases.
    - **Empty response**:
      - If you wish to *confine* RAGFlow's answers to your knowledge bases, leave a response here. Then when it doesn't retrieve an answer, it *uniformly* responds with what you set here.
      - If you wish RAGFlow to *improvise* when it doesn't retrieve an answer from your knowledge bases, leave it blank, which may give rise to hallucinations.
 
-3. Update **Prompt Engine** or leave it as is for the beginning.
+3. Update **Prompt engine** or leave it as is for the beginning.
 
-4. Update **Model Setting**.
+4. Update **Model settings**.
 
 5. Now, let's start the show: