Refactored docs (#2284)

* Refactored documentation for providers

* Lots of fixes
- Fixed grammar/typos
- Fixed sidebar config
- Enabled additional prism languages

* Removed useless spaces

* Fixed leftover typos

* Fixes for verify-generate

* Updated package-lock.json

docs/docusaurus.config.js

@@ -37,6 +37,9 @@ module.exports = {
       style: 'dark',
       copyright: `Copyright © ${new Date().getFullYear()} OAuth2 Proxy.`,
     },
+    prism: {
+      additionalLanguages: ['hcl', 'powershell'],
+    },
   },
   presets: [
     [