fix: adjusted the order of the tutorials page for .env to be the final page

Author: CryptoTotalWar

sidebars.ts

@@ -23,11 +23,11 @@ const sidebars: SidebarsConfig = {
             'tutorials/polykey-cli/bootstrapping',
             'tutorials/polykey-cli/managing-vaults',
             'tutorials/polykey-cli/managing-secrets',
-            'tutorials/polykey-cli/using-environment-variables',
             'tutorials/polykey-cli/claiming-digital-identities',
             'tutorials/polykey-cli/discovering-other-users',
             'tutorials/polykey-cli/sharing-vaults',
             'tutorials/polykey-cli/managing-multiple-nodes',
+            'tutorials/polykey-cli/using-environment-variables',
           ],
         },
         {