chore: Add instant guide to metadata and fix syntax issue

Author: kimpers

mdx/guides/integrate-instant.mdx

@@ -48,7 +48,7 @@ The 0x Instant UI powered by 0x API are bundled together in a convenient JS pack
     </body>
 </html>
 ```
-
+</CodeTabs>
 
 ## Options Configuration
 
@@ -222,4 +222,4 @@ Please open issue on [Instant Github](https://github.com/0xProject/0x-instant/is
 
 ### Q: The token that I want to swap keeps failling?
 
-Instant powered by 0x API supports any Token that has liquidity and follows ERC20 standard. Tokens that not follow ERC20 standard can fail as for instance deflationary or with buy back functions.
+Instant powered by 0x API supports any Token that has liquidity and follows ERC20 standard. Tokens that not follow ERC20 standard can fail as for instance deflationary or with buy back functions.

ts/utils/algolia_meta.json

@@ -54,6 +54,15 @@
             "difficulty": "Beginner",
             "path": "guides/how-to-set-your-token-allowances.mdx"
         },
+        "integrate-instant": {
+            "title": "How to integrate 0x Instant in your project",
+            "subtitle": "Learn how to use 0x Instant to enable trading of tokens on any website",
+            "description": "Learn how to use 0x Instant to enable trading of tokens on any website",
+            "tags": ["0x API"],
+            "topics": ["0x Instant", "0x API"],
+            "difficulty": "Beginner",
+            "path": "guides/integrate-instant.mdx"
+        },
         "create-staking-pool": {
             "title": "Create and manage your staking pool",
             "subtitle": "Learn how to create and manage your staking pool to collect liquidity rewards",