fix(docs): versions compatibility

Author: pepperfm

content/plugins/pepperfm-json.md

@@ -6,10 +6,9 @@ categories: [table-builder, table-column]
 description: A plugin for processing JSON columns.
 discord_url: https://discord.com/channels/883083792112300104/1264955277401391164
 docs_url: https://raw.githubusercontent.com/pepperfm/filament-json/main/README.md
-url: https://docs.pepperfm.com/filament-json
 github_repository: pepperfm/filament-json
 has_dark_theme: true
 has_translations: false
-versions: [3]
+versions: [3, 4]
 publish_date: 2024-07-22
 ---