✨ feat(loading_document.mdx): add step-by-step instructions on how to define a Prompt variable and connect a WebBaseLoader to it for loading a document into the variable
🔀 chore(loading_document.mdx): reorganize and rephrase the content to improve readability and clarity
This commit adds a new guide file `loading_document.mdx` that provides an overview and example on how to load a document into a Prompt variable. The guide explains the process of defining a Prompt variable in the `PromptTemplate` component, connecting a `WebBaseLoader` to the variable, and building the flow. It also demonstrates how to chat with the document content in the context of a conversation.
The commit also includes an embedded iframe that showcases the functionality described in the guide.
