Merge pull request #134270 from kini/acl2-update

acl2: Fix typo in cleanup commands

pkgs/development/interpreters/acl2/default.nix

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     # Clean up some stuff to save space
     find -name '*@useless-runes.lsp' -execdir rm {} +  # saves ~1GB of space
-    find -name '*.cert.out' -execdir gz {} +           # saves ~400MB of space
+    find -name '*.cert.out' -execdir gzip {} +         # saves ~400MB of space
 
     popd
   '';