Cortex Analyst Quick Start - how to define HOST variable

[sfc-gh-rbraun]

Describe the bug
Certificate ERROR - Please call out in docs how to specify host, to make for a better user exprience.

If you are doing the Cortex Analyst Quickstart and you run into certificate errors, note that the HOST can not include any underscores ( _ ), they need to be replaced with dashes ( - ). Took me a few minutes to figure that out.
My Account Name is VA_DEMO166, In the host definition I had to reference it as VA-DEMO166

Does not Work:

HOST = "SFSENORTHAMERICA-VA_DEMO166.snowflakecomputing.com"

Works:

HOST = "SFSENORTHAMERICA-VA-DEMO166.snowflakecomputing.com"

URL of where you see the bug
https://quickstarts.snowflake.com/guide/getting_started_with_cortex_analyst/index.html#6

To Reproduce

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

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