[API release]: Add link to SBOM API docs from product docs (#37288)

Co-authored-by: Sarah Edwards <skedwards88@github.com>

content/code-security/supply-chain-security/understanding-your-software-supply-chain/exporting-a-software-bill-of-materials-for-your-repository.md

@@ -16,7 +16,9 @@ shortTitle: Export dependencies as SBOM
 
 {% data reusables.dependabot.about-the-dependency-graph %}
 
-You can export the current state of the dependency graph for your repository as a Software Bill of Materials (SBOM) using the industry standard [SPDX](https://spdx.github.io/spdx-spec/v2.3/) format. 
+You can export the current state of the dependency graph for your repository as a Software Bill of Materials (SBOM) using the industry standard [SPDX](https://spdx.github.io/spdx-spec/v2.3/) format:
+- Via the {% data variables.product.prodname_dotcom %} UI
+- Using the REST API
 
 {% data reusables.dependency-graph.sbom-intro %}
 
@@ -28,3 +30,7 @@ If your company provides software to the US federal government per [Executive Or
 {% data reusables.repositories.accessing-repository-graphs %}
 1. In the left sidebar, click **Dependency graph**.
 1. On the top right side of the **Dependencies** tab, click **Export SBOM** to generate an SBOM file for download from your browser. 
+
+## Exporting a software bill of material for your repository using the REST API
+
+If you want to use the REST API to export an SBOM for your repository, see [AUTOTITLE](/rest/dependency-graph/sboms#export-a-software-bill-of-materials-sbom-for-a-repository) in the REST API documentation for more information.

content/code-security/supply-chain-security/understanding-your-software-supply-chain/using-the-dependency-submission-api.md

@@ -98,6 +98,7 @@ Alternatively, you can write your own action to submit dependencies for your pro
 {% ifversion dependency-graph-sbom-export %}
 To generate an SBOM, you can use:
 - the {% data variables.product.prodname_dotcom %} user interface.  For more information about how to export an SBOM for a repository using information from the dependency graph, see "[AUTOTITLE](/code-security/supply-chain-security/understanding-your-software-supply-chain/exporting-a-software-bill-of-materials-for-your-repository)."
+- the REST API. For more information, see "[AUTOTITLE](/rest/dependency-graph/sboms)."
 - {% data variables.product.prodname_actions %}. The following actions will generate an SBOM for your repository and attach it as a workflow artifact which you can download and use in other applications. For more information about downloading workflow artifacts, see "[AUTOTITLE](/actions/managing-workflow-runs/downloading-workflow-artifacts)."
 {% else %}
 You can use {% data variables.product.prodname_actions %} to generate an SBOM. The following actions will generate an SBOM for your repository and attach it as a workflow artifact which you can download and use in other applications. For more information about downloading workflow artifacts, see "[AUTOTITLE](/actions/managing-workflow-runs/downloading-workflow-artifacts)."

content/rest/dependency-graph/sboms.md

@@ -10,5 +10,8 @@ topics:
 autogenerated: rest
 allowTitleToDifferFromFilename: true
 ---
+{% data reusables.dependency-graph.sbom-export %}
+
+This article gives details about the REST API endpoint.
 
 <!-- Content after this section is automatically generated -->

data/reusables/dependency-graph/sbom-export.md

@@ -1 +1 @@
-If you have at least read access to the repository, you can export the dependency graph for the repository as an SPDX-compatible, Software Bill of Materials (SBOM). For more information, see "[AUTOTITLE](/code-security/supply-chain-security/understanding-your-software-supply-chain/exporting-a-software-bill-of-materials-for-your-repository)."
+If you have at least read access to the repository, you can export the dependency graph for the repository as an SPDX-compatible, Software Bill of Materials (SBOM), via the {% data variables.product.prodname_dotcom %} UI or {% data variables.product.company_short %} REST API. For more information, see "[AUTOTITLE](/code-security/supply-chain-security/understanding-your-software-supply-chain/exporting-a-software-bill-of-materials-for-your-repository)."