docs: update keywords format for Arrays chapter

Author: JeelRajodiya

content/01-Getting-Started/05-Arrays/instructions.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Arrays"
 description: "Learn how to define arrays in JSON Schema using the type and items keywords, and convert properties to arrays of strings."
-keywords: ["array", "JSON Schema", "type", "items", "subschema", "strings"]
+keywords: "array, JSON Schema, type, items, subschema, strings"
 ---
 
 # Arrays