Update difference-of-blockchains.md (#716)

The previous link is broken, fix with ton.org pdf

docs/develop/ethereum-to-ton/difference-of-blockchains.md

@@ -15,7 +15,7 @@ Ethereum, by inheriting and extending the foundational principles of Bitcoin, ha
 In response to these challenges, TON offers an alternative approach aimed at improving scalability and performance. Designed with the ambition to provide developers with maximum flexibility to create a variety of applications, TON uses the concept of shards and masterchain to optimize the block creation process. In each TON shardchain and masterchain, a new block is generated on average every 5 seconds, ensuring fast transaction execution. Unlike Ethereum, where state updates are synchronous, TON implements asynchronous messaging between smart contracts, allowing each transaction to be processed independently and in parallel, significantly speeding up transaction processing on the network. Sections and articles to familiarize yourself with:
 
 * [Shards](/develop/blockchain/shards)
-* [Comparison of Blockchains](https://ton.org/analysis)
+* [Comparison of Blockchains](https://ton.org/comparison_of_blockchains.pdf)
 
 In conclusion, by comparing the architecture and technological underpinnings of TON and Ethereum, it is clear that TON offers significant advantages. With its innovative approach to asynchronous transaction processing and unique shard and masterchain architecture, TON demonstrates the potential to support millions of transactions per second without compromising security or centralization. This provides the platform with outstanding flexibility and efficiency, making it ideal for a wide range of applications.
 
@@ -54,4 +54,4 @@ What happens between two contracts is called a message - a small number of token
 In Ethereum, the cost of a transaction is measured in `gas`, which reflects the amount of computing resources required for the transaction. The `gas` cost is divided into a `base fee` set by the protocol and a `priority fee` that the user adds to speed up transaction processing by validators. The `total fee` will be = `units of gas used` * (`base fee` + `priority fee`).
 Additionally, storage in Ethereum is essentially free, meaning that once data is stored on the blockchain, there is no ongoing cost for keeping it there.
 
-In TON, the calculation of transaction fees is complex and includes several types of fees: for storing smart contracts in the blockchain, for importing messages into the blockchain, for executing code on a virtual machine, for processing actions after code execution, and for sending messages outside the TON blockchain. The price of gas and some other parameters can be changed by voting on the main network. Unlike Ethereum, TON users cannot set the gas price themselves. Also, the developer needs to return the remaining gas funds to the owner manually, otherwise they will remain locked. The use of smart contract storage also affects the price: if a wallet's smart contract has not been used for a long time, the next transaction will cost more.
+In TON, the calculation of transaction fees is complex and includes several types of fees: for storing smart contracts in the blockchain, for importing messages into the blockchain, for executing code on a virtual machine, for processing actions after code execution, and for sending messages outside the TON blockchain. The price of gas and some other parameters can be changed by voting on the main network. Unlike Ethereum, TON users cannot set the gas price themselves. Also, the developer needs to return the remaining gas funds to the owner manually, otherwise they will remain locked. The use of smart contract storage also affects the price: if a wallet's smart contract has not been used for a long time, the next transaction will cost more.