Update blockchain.md

docs/1.concepts/web3/blockchain.md

@@ -151,7 +151,7 @@ There are a lot of blockchains out there and it might be hard to choose the most
 - Scalability - whether a network is designed to support a large number of transactions. If not, transaction speed/cost may grow out of control over time. 
 - Development experience - most importantly, what language we’ll use to write our smart contracts. Ethereum popularized [Solidity](https://docs.soliditylang.org/en/v0.8.12/) as a programming language of choice for contracts. Several newer chains, like NEAR, chose Rust, which is a more mature general-purpose programming language.
 
-Historically, the first blockchain to introduce smart contracts was Ethereum. However, as the number of users grew, transaction speed and cost skyrocketed, and it became apparent that it couldn't handle the demand. So, a number of [scaling solutions](https://ethereum.org/en/developers/docs/scaling.html) appeared - [layer 2 chains](https://ethereum.org/en/developers/docs/scaling/#layer-2-scaling), [sidechains](https://ethereum.org/en/developers/docs/scaling/sidechains/), and [plasma chains](https://ethereum.org/en/developers/docs/scaling/plasma/). However, they all use some kind of workarounds with their own unique drawbacks. Ethereum tries to fix the core problem and redesign its network - like switching to a Proof-of-stake consensus, which is ongoing for quite a long time, but exact timeline when all of the problems will be fixed is very unclear.
+Historically, the first blockchain to introduce smart contracts was Ethereum. However, as the number of users grew, transaction speed and cost skyrocketed, and it became apparent that it couldn't handle the demand. So, a number of [scaling solutions](https://ethereum.org/en/developers/docs/scaling.html) appeared - [layer 2 chains](https://ethereum.org/en/developers/docs/scaling.html#layer-2-scaling), [sidechains](https://ethereum.org/en/developers/docs/scaling/sidechains/), and [plasma chains](https://ethereum.org/en/developers/docs/scaling/plasma/). However, they all use some kind of workarounds with their own unique drawbacks. Ethereum tries to fix the core problem and redesign its network - like switching to a Proof-of-stake consensus, which is ongoing for quite a long time, but exact timeline when all of the problems will be fixed is very unclear.
 
 Meanwhile, a new generation of blockchains started to appear. They learned from the Etherium mistakes, and designed them from ground-up to be fast, cheap and scalable. 
 Choosing the right one is by no means an easy task, but for us we found the [NEAR](https://near.org/) blockchain to be an ideal solution, because of the following properties: