Update sl-graphql.md (#3914)

Update with some of Will's graphql content

## What are you changing in this pull request and why?
<!---
Adding more documentation to graphql (not public yet but also released)

To learn more about the writing conventions used in the dbt Labs docs,
see the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md).
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Adding new pages (delete if not applicable):
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Removing or renaming existing pages (delete if not applicable):
- [ ] Remove page from `website/sidebars.js`
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to update the links that point to the deleted page

website/docs/docs/build/sl-getting-started.md

@@ -5,7 +5,7 @@ description: "Learn how to create your first semantic model and metric."
 sidebar_label: Get started with MetricFlow
 tags: [Metrics, Semantic Layer]
 meta:
-  api_name: dbt Semantic Layer API
+  api_name: dbt Semantic Layer APIs
 ---
 
 import InstallMetricFlow from '/snippets/_sl-install-metricflow.md';
@@ -85,7 +85,7 @@ You can query your metrics in a JDBC-enabled tool or use existing first-class in
 
 You must have a dbt Cloud Team or Enterprise [multi-tenant](/docs/cloud/about-cloud/regions-ip-addresses) deployment, hosted in North America. (Additional region support coming soon)
 
-- <span>To learn how to use the JDBC API and what tools you can query it with, refer to the  <a href="https://docs.getdbt.com/docs/dbt-cloud-apis/sl-api-overview" target="_self">{frontMatter.meta.api_name}</a></span>.<br />
+- <span>To learn how to use the JDBC or GraphQL API and what tools you can query it with, refer to the  <a href="https://docs.getdbt.com/docs/dbt-cloud-apis/sl-api-overview" target="_self">{frontMatter.meta.api_name}</a></span>.<br />
 
     * To authenticate, you need to [generate a service token](/docs/dbt-cloud-apis/service-tokens) with Semantic Layer Only and Metadata Only permissions.
     * Refer to the [SQL query syntax](/docs/dbt-cloud-apis/sl-jdbc#querying-the-api-for-metric-metadata) to query metrics using the API.  

website/docs/docs/dbt-cloud-apis/sl-api-overview.md

@@ -1,7 +1,7 @@
 ---
-title: "Semantic Layer API"
+title: "Semantic Layer APIs"
 id: sl-api-overview
-description: "Integrate and query using the Semantic Layer API."
+description: "Integrate and query metrics and dimensions in downstream tools using the Semantic Layer APIs"
 tags: [Semantic Layer, API]
 hide_table_of_contents: true
 ---
@@ -36,24 +36,20 @@ product="dbt Semantic Layer"
 plan="dbt Cloud Team and Enterprise"
 instance="hosted in North America"
 />
-<br /><br />
 
-<div className="grid--2-col">
+<div className="grid--3-col">
 
 <Card
     title="JDBC API"
     body="Use a JDBC driver to query metrics and dimensions in downstream tools, while also providing standard metadata functionality."
     link="/docs/dbt-cloud-apis/sl-jdbc"
     icon="dbt-bit"/>
 
-<!-- 
-commenting out until it's available
 <Card
     title="GraphQL API"
-    body="Use GraphQL to query metrics in downstream tools."
+    body="Use GraphQL to query metrics and dimensions in downstream tools."
     link="/docs/dbt-cloud-apis/sl-graphql"
     icon="dbt-bit"/>
--->
 
 <Card
     title="Semantic manifest"