zotero: fix linux rpath

Change library path from `${stdenv.cc.cc.lib}/lib64` to `${stdenv.cc.cc.lib}/lib`

pkgs/by-name/zo/zotero/linux.nix

···
       pciutils
     ]
     + ":"
-    + lib.makeSearchPathOutput "lib" "lib64" [ stdenv.cc.cc ];
+    + lib.makeSearchPathOutput "lib" "lib" [ stdenv.cc.cc ];
 
   desktopItem = makeDesktopItem {
     name = "zotero";