Update 7zip.md

Author: ivan-hc

apps/7zip.md

@@ -2,6 +2,10 @@
 
  7-Zip is a file archiver with a high compression ratio.
 
+ This package includes the commands "7zip" and "7zips".
+
+ For "7z", see the version available in the "Toolpacks" database instead.
+
  SITE: https://www.7-zip.org
 
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