feat: move sbt to nft folder

docs.json

@@ -345,16 +345,10 @@
                   "standard/tokens/nft/overview",
                   "standard/tokens/nft/how-works",
                   "standard/tokens/nft/comparison",
-                  "standard/tokens/nft/cNFT-how-it-works"
+                  "standard/tokens/nft/cnft-how-it-works",
+                  "standard/tokens/nft/sbt-how-it-works"
                 ]
-              },
-              {
-                "group": "SBT",
-                "pages": [
-                  "standard/tokens/sbt/overview",
-                  "standard/tokens/sbt/how-it-works"
-                ]
-              },
+              },      
               "standard/tokens/airdrop"
             ]
           },

guidebook/from-ethereum.mdx

@@ -113,5 +113,5 @@ This section showcases match between some of the Ethereum standards and proposal
 | Token metadata                          | ERC-4955 (Not exactly, but close match) | [Token Data Standard (TEP-0064)](/standard/tokens/metadata)        |
 | NFT royalty standard                    | EIP-2981                                | [NFT Royalty Standard (TEP-0066)](/standard/tokens/nft/comparison) |
 | DNS-like registry                       | ENS (EIP-137)                           | [DNS Standard (TEP-0081)](/services/dns)                           |
-| Soulbound / account-bound token concept | EIP-4973                                | [SBT Standard (TEP-0085)](/standard/tokens/sbt/overview)           |
+| Soulbound / account-bound token concept | EIP-4973                                | [SBT Standard (TEP-0085)](/standard/tokens/nft/comparison#sbt)     |
 | Wallet connection protocol              | WalletConnect / EIP-1193                | [TonConnect (TEP-0115)](/ecosystem/ton-connect)                    |

standard/tokens/nft/sbt-how-it-works.mdx

@@ -0,0 +1,7 @@
+---
+title: "SBT: How it works"
+---
+
+import { Aside } from "/snippets/aside.jsx";
+
+<Stub issue="104" />

standard/tokens/overview.mdx

@@ -5,22 +5,20 @@ sidebarTitle: "Overview"
 
 This article compares different kinds of Tokens in TON.
 
-The TON blockchain supports three distinct categories of digital tokens, each designed to serve different purposes within the ecosystem. 
+The TON blockchain supports three distinct categories of digital tokens, each designed to serve different purposes within the ecosystem.
 
 - [Fungible tokens](/standard/tokens/jettons/overview) (Jettons) - this is a web3 way to create new currency on your own
 - [Non-Fungible Tokens](/standard/tokens/nft/overview) (NFTs) - like Jettons, but each token is unique and represent distinct entity
-- [Soul-bound Tokens](/standard/tokens/sbt/overview) (SBTs) - like NFTs, but not-transferable, bound to a single owner
+- [Soul-bound Tokens](/standard/tokens/nft/comparison#sbt) (SBTs) - like NFTs, but not-transferable, bound to a single owner
 
 ## Comparison table
 
 | Feature              | Jettons           | NFTs                 | SBTs                  |
-|----------------------|-------------------|----------------------|-----------------------|
+| -------------------- | ----------------- | -------------------- | --------------------- |
 | **Fungibility**      | Fungible          | Non-fungible         | Non-fungible          |
-| **Transferability**  | ✅ Transferable.   | ✅ Transferable      | ❌ Non-transferable   |
-| **Divisibility**     | ✅ Divisible       | ❌ Indivisible       | ❌ Indivisible        |
+| **Transferability**  | ✅ Transferable.   | ✅ Transferable       | ❌ Non-transferable    |
+| **Divisibility**     | ✅ Divisible       | ❌ Indivisible        | ❌ Indivisible         |
 | **Primary use case** | Currency, utility | Art, collectibles    | Credentials, identity |
 | **Value type**       | Monetary value    | Unique value         | Reputational value    |
-| **Ownership model**  | Liquid ownership  | Verifiable ownership  | Permanent binding     |
+| **Ownership model**  | Liquid ownership  | Verifiable ownership | Permanent binding     |
 | **Standard**         | TEP-0074          | TEP-0062             | TEP-0085              |
-
-