docs(release): add docs issue for TRG compliance to issue template (#750

)

.github/ISSUE_TEMPLATE/3_product_release_checks.md

@@ -4,7 +4,7 @@ about: Use this template to track all release checks for your component
 title: "[Product] Release Checks"
 ---
 
-> [!IMPORTANT]  
+> [!IMPORTANT]
 > Follow the [guidance on how to use the templates](https://github.com/eclipse-tractusx/sig-release/blob/main/README.md#release-management-acceptance-criteria).
 
 ## Release Info
@@ -19,7 +19,7 @@ Make sure to assign this issue to expert(s) for their approval, as soon as you h
 
 # Compliance Verifications
 
-This issue tracks all checks, that need to be performed for a product release in Eclipse Tractus-X. 
+This issue tracks all checks, that need to be performed for a product release in Eclipse Tractus-X.
 
 - [ ] **Interoperability** checks performed
 - [ ] **Data Sovereignty** checks performed
@@ -28,6 +28,8 @@ This issue tracks all checks, that need to be performed for a product release in
 
 - [ ] [**Tractus-X Release Guidelines**](https://eclipse-tractusx.github.io/docs/release)(TRGs) fulfilled
 
+Make sure to open and fill in a separate **documentation issue** in your product repository using the [Quality Gate Checklist issue template](https://github.com/eclipse-tractusx/.github/blob/main/.github/ISSUE_TEMPLATE/qg-checklist.md)
+
 > [!NOTE]
 > Note: most criteria for documentation and security are now covered in TRGs