Update lint-format.md (#4245)

## What are you changing in this pull request and why?
Adding some limitations of our SQLFluff implementation. See internal
JIRA: https://dbtlabs.atlassian.net/browse/XP-2679

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
and [About
versioning](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
so my content adheres to these guidelines.
- [ ] Add a checklist item for anything that needs to happen before this
PR is merged, such as "needs technical review" or "change base branch."

website/docs/docs/cloud/dbt-cloud-ide/lint-format.md

@@ -45,7 +45,11 @@ With the dbt Cloud IDE, you can seamlessly use [SQLFluff](https://sqlfluff.com/)
 - Works with Jinja and SQL, 
 - Comes with built-in [linting rules](https://docs.sqlfluff.com/en/stable/rules.html). You can also [customize](#customize-linting) your own linting rules.
 - Empowers you to [enable linting](#enable-linting) with options like **Lint** (displays linting errors and recommends actions) or **Fix** (auto-fixes errors in the IDE).
-- Displays a **Code Quality** tab to view code errors, and provides code quality visibility and management. 
+- Displays a **Code Quality** tab to view code errors, and provides code quality visibility and management.
+
+:::info Ephemeral models not supported
+Linting doesn't support ephemeral models in dbt v1.5 and lower. Refer to the [FAQs](#faqs) for more info.
+:::
 
 ### Enable linting
 
@@ -223,6 +227,12 @@ Currently, running SQLFluff commands from the terminal isn't supported.
 Make sure you're on a development branch. Formatting or Linting isn't available on "main" or "read-only" branches. 
 </details>
 
+<details>
+<summary>Why is there inconsistent SQLFluff behavior when running outside the dbt Cloud IDE (such as a GitHub Action)?</summary>
+&mdash; Double-check your SQLFluff version matches the one in dbt Cloud IDE (found in the <b>Code Quality</b> tab after a lint operation). <br /><br />
+&mdash; If your lint operation passes despite clear rule violations, confirm you're not linting models with ephemeral models. Linting doesn't support ephemeral models in dbt v1.5 and lower. 
+</details>
+
 ## Related docs
 
 - [User interface](/docs/cloud/dbt-cloud-ide/ide-user-interface)