retouches to scene-blockchain-operations.md

Signed-off-by: Nicolas Earnshaw <[email protected]>

content/creator/sdk7/blockchain/scene-blockchain-operations.md

@@ -17,13 +17,8 @@ Note that all transactions in the Ethereum mainnet that are triggered by a scene
 
 All blockchain operations also need to be carried out as [asynchronous functions]({{< ref "/content/creator/sdk7/programming-patterns/async-functions.md" >}}), since the timing depends on external events.
 
-When running a preview of a scene that uses one of the ethereum libraries, you must open the preview in a separate browser window, have Metamask open in your browser, and manually include the string `&ENABLE_WEB3`.
 
-If using the CLI, run the preview with:
 
-```
-npm run start -- --web3
-```
 
 <!--
 ## Download and import the ethers.js library
@@ -208,7 +203,7 @@ The example above listens for clicks on a _button_ entity. When clicked, the pla
 
 {{< hint info >}}
 **💡 Tip**:  We recommend defining the wallet address and the amount to pay as global constants at the start of the _.ts_ file. These are values you might need to change in the future, setting them as constants makes it easier to update the code.
-{{< /hint >}} --> -->
+{{< /hint >}} -->
 
 ## Check gas price
 
@@ -399,6 +394,8 @@ To preview your scene using the test network, open Decentraland with the followi
 **💡 Tip**: Change the position parameter to the coordinates of your scene, to load directly into your scene..
 {{< /hint >}}
 
+When running a preview on the web client, of a scene that uses one of the ethereum libraries, you must open the preview in a separate browser window, have Metamask open in your browser, and manually include the string `&ENABLE_WEB3`.
+
 Any transactions that you accept while viewing the scene in this mode will only occur in the test network and not affect the MANA balance in your real wallet.
 
 If you need to test transactions in the Polygon Testnet and need to have MANA on that testnet, you'll need to swap MANA to that network after acquiring it in Sepolia. To bridge Sepolia MANA to the Polygon Testnet, visit your [Decentraland account page in Sepolia](https://account.decentraland.zone/) and click on ‘swap’ on the Ethereum MANA side.