Update customize-schema-alias.md (#6767)

## What are you changing in this pull request and why?

Adding some keywords to help make this guide more discoverable in google
searches.

## Checklist
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guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.
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have versioned it according to the [version a whole
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content](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#versioning-blocks-of-content)
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- [ ] I have added checklist item(s) to this list for anything anything
that needs to happen before this PR is merged, such as "needs technical
review" or "change base branch."
- [ ] The content in this PR requires a dbt release note, so I added one
to the [release notes
page](https://docs.getdbt.com/docs/dbt-versions/dbt-cloud-release-notes).
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<!-- vercel-deployment-preview -->
---
🚀 Deployment available! Here are the direct links to the updated files:


-
https://docs-getdbt-com-git-runleonarun-patch-15-dbt-labs.vercel.app/guides/customize-schema-alias

<!-- end-vercel-deployment-preview -->

---------

Co-authored-by: Matt Shaver <[email protected]>

website/docs/guides/customize-schema-alias.md

@@ -9,6 +9,7 @@ icon: 'guides'
 hide_table_of_contents: true
 level: 'Advanced'
 recently_updated: true
+keywords: ["generate", "schema name", "guide", "dbt", "schema customization", "custom schema"]
 ---
 
 <div style={{maxWidth: '900px'}}>