Rename resource to artifact for clarity

Author: Michael Long

entrypoint/entrypoint/pkg_vuln.py

@@ -340,7 +340,7 @@ def to_markdown(vulns,
     markdown += "\n\n"
 
     if not vulns:
-        markdown += ":green_circle: Your resource was scanned with Amazon Inspector and no vulnerabilities were detected."
+        markdown += ":green_circle: Your artifact was scanned with Amazon Inspector and no vulnerabilities were detected."
         markdown += "\n\n"
         return markdown