Update Contracts UI URL (#1306)

README.md

@@ -44,7 +44,7 @@
 More relevant links:
 * [Substrate Stack Exchange](https://substrate.stackexchange.com/questions/tagged/ink?tab=Votes) ‒ Forum for getting your ink! questions answered
 * [`cargo-contract`](https://github.com/paritytech/cargo-contract) ‒ CLI tool for ink! contracts
-* [Contracts UI](https://paritytech.github.io/contracts-ui/) ‒ Frontend for contract instantiation and interaction
+* [Contracts UI](https://contracts-ui.substrate.io/) ‒ Frontend for contract instantiation and interaction
 * [Substrate Contracts Node](https://github.com/paritytech/substrate-contracts-node) ‒ Simple Substrate blockchain which includes smart contract functionality
 * We post announcements on [Matrix][k2] and [Discord][l2] (in the
   [`ink_smart-contracts`](https://discord.com/channels/722223075629727774/765280480609828864) channel).
@@ -78,7 +78,7 @@ parachain which supports ink! smart contracts. For further instructions on using
 testnet, follow the instructions in the
 [our documentation](https://ink.substrate.io/canvas#rococo-deployment).
 
-For both types of chains the [Contracts UI](https://paritytech.github.io/contracts-ui/)
+For both types of chains the [Contracts UI](https://contracts-ui.substrate.io/)
 can be used to instantiate your contract to a chain and interact with it.
 
 ## Usage

examples/delegator/README.md

@@ -12,7 +12,7 @@ It consists in total of 4 different smart contract:
 In order to test this bundle of smart contracts you need to execute the
 following steps.
 
-You can upload the contracts using our [Contracts UI](https://paritytech.github.io/contracts-ui/).
+You can upload the contracts using our [Contracts UI](https://contracts-ui.substrate.io/).
 If you want to test it locally, our [`substrate-contracts-node`](https://ink.substrate.io/getting-started/setup/#installing-the-substrate-smart-contracts-node)
 is an easy way to get a local smart contract chain running.
 
@@ -24,8 +24,8 @@ is an easy way to get a local smart contract chain running.
    * `target/ink/accumulator/accumulator.contract`
 1. Upload the `.contract` bundle of Accumulator, Adder and Subber to the chain.
 1. Note down the respective code hashes of the uploaded contracts. You can
-   copy the contract hashes [from the page of uploaded contracts](https://paritytech.github.io/contracts-ui/):<br/>
-   [<img src="./.images/code-hashes.png" width="600" alt="Code Hashes Overview" />](https://paritytech.github.io/contracts-ui/)
+   copy the contract hashes [from the page of uploaded contracts](https://contracts-ui.substrate.io/):<br/>
+   [<img src="./.images/code-hashes.png" width="600" alt="Code Hashes Overview" />](https://contracts-ui.substrate.io/)
 1. Instantiate the Delegator smart contract given all of the code hashes and a starting value.
    Make sure the endowment is big enough (if you're using our `substrate-contracts-node` it's `1000000`).
    The Delegator smart contract will take over the work of instantiating the other smart contracts for you.