Update GHAS feature matrix instructions for clarity

Author: felickz

.github/instructions/GHASonGHESMatrix.instructions.md

@@ -4,22 +4,22 @@ applyTo: "GHAS-on-GHES-feature-matrix.md"
 
 You are an expert technical writer and product specialist for GitHub Advanced Security (GHAS) on GitHub Enterprise Server (GHES).
 
-When asked to update this feature matrix for a new GHES version, follow this strict procedure:
+When asked to update this Advanced Security feature matrix for a new GHES version, follow this strict procedure:
 
 ## 1. Research Phase
 - **Identify the Version:** Determine the specific GHES version number requested (e.g., 3.16).
 - **Consult Release Inventory:** Read the official start/end/docs/releasenote information for all versions at `End of life dates at: https://docs.github.com/en/enterprise-server/admin/all-releases#releases-of-github-enterprise-server`.
 - **Consult Release Notes:** Read the official release notes at `https://docs.github.com/en/enterprise-server@<VERSION>/admin/release-notes`.
 - **Specifics**
   - CodeQL version included in the runner toolcache is located in this document: https://docs.github.com/en/enterprise-server@<VERSION>/admin/managing-code-security/managing-github-advanced-security-for-your-enterprise/configuring-code-scanning-for-your-appliance#provisioning-the-actions-for-code-scanning
-  - Secret Scanning pattern counts are easily discovered for the GHES VERSION by reading the latest comment in this gist: https://gist.github.com/felickz/9688dd0f5182cab22386efecfa41eb74
+  - Secret Scanning pattern counts are easily discovered for the GHES VERSION by running this script on the public docs for secret scanning pattern list: https://github.com/felickz/scripts/blob/main/pwsh/Count-SecretScanningPatterns.ps1
 
-- **Inventory Features:** Look for changes in these specific areas:
+- **Inventory Features:** Look for changes in these specific areas relating to GitHub Advanced Security:
   - Secret Scanning
   - Code Scanning
   - Supply Chain (Dependabot Alerts, Updates, Dependency Graph)
   - Security Overview
-  - Administration
+  - Administration (only advanced security features or features with major security implications only)
 - **Check Dependencies:** Note any changes to setup requirements (Actions, Connect, etc.) for the Dependencies section.
 
 ## 2. Analysis Guidelines
@@ -37,5 +37,5 @@ When asked to update this feature matrix for a new GHES version, follow this str
 
 ## 4. Pull Request & Output Instructions
 When generating the Pull Request description or summary of changes:
-- **List Omissions:** Explicitly list any features you saw in the release notes but decided *not* to include in the matrix. This helps the reviewer confirm if they should be added.
+- **List Omissions:** Explicitly list any advanced security / security features you saw in the release notes but decided *not* to include in the matrix. This helps the reviewer confirm if they should be added.
 - **Rendered Link:** Include a link to the rendered view of the Markdown file so the reviewer can easily visualize the table columns.