Fix typo: Duplicated the word in website/snippets/_sl-define-metric…

…s.md (#4400)

## What are you changing in this pull request and why?
 Duplicated word `the` in `website/snippets/_sl-define-metrics.md`

## Checklist
<!--
Uncomment if you're publishing docs for a prerelease version of dbt
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- [ ] Add versioning components, as described in [Versioning
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- [ ] Add a note to the prerelease version [Migration
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- [x] Review the [Content style
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and [About
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so my content adheres to these guidelines.
- [x] Add a checklist item for anything that needs to happen before this
PR is merged, such as "needs technical review" or "change base branch."

Adding new pages (delete if not applicable):
- [ ] Add page to `website/sidebars.js`
- [ ] Provide a unique filename for the new page

Removing or renaming existing pages (delete if not applicable):
- [ ] Remove page from `website/sidebars.js`
- [ ] Add an entry `website/static/_redirects`
- [ ] [Ran link
testing](https://github.com/dbt-labs/docs.getdbt.com#running-the-cypress-tests-locally)
to update the links that point to the deleted page

website/snippets/_sl-define-metrics.md

@@ -4,7 +4,7 @@ MetricFlow supports different metric types like [simple](/docs/build/simple), [r
 
 1. You can define metrics in the same YAML files as your semantic models or create a new file. If you want to create your metrics in a new file, create another directory called `/models/metrics`. The file structure for metrics can become more complex from here if you need to further organize your metrics, for example, by data source or business line.
 
-2. The example metric we'll create is a simple metric that refers directly to the the `order_total` measure, which will be implemented as a `sum()` function in SQL. Again, if you're working in the Jaffle shop sandbox, we recommend deleting the original `orders.yml` file, or removing the .yml extension so it's ignored during parsing. We'll be rebuilding the `order_total` metric from scratch. If you're working in your own project, create a simple metric like the one below using one of the measures you created in the previous step.
+2. The example metric we'll create is a simple metric that refers directly to the `order_total` measure, which will be implemented as a `sum()` function in SQL. Again, if you're working in the Jaffle shop sandbox, we recommend deleting the original `orders.yml` file, or removing the .yml extension so it's ignored during parsing. We'll be rebuilding the `order_total` metric from scratch. If you're working in your own project, create a simple metric like the one below using one of the measures you created in the previous step.
 
 ```yaml
 metrics: