Remove example Explorer object URL from Devnet doc (MystenLabs#3212)

* Remove example Explorer object URL from Devnet doc

* Remove object-id placeholder from second Explorer link

doc/src/explore/devnet.md

@@ -78,10 +78,8 @@ Type: 0x2::devnet_nft::DevNetNFT
 
 The above command created an object with ID `ED883F6812AF447B9B0CE220DA5EA9E0F58012FE`. Note you may use `Sui CLI client` to [view objects owned by the account](https://docs.sui.io/build/wallet#view-objects-owned-by-the-account).
 
-Now you can view the created object in the [Sui Explorer](https://explorer.devnet.sui.io) at:
-https://explorer.devnet.sui.io/objects/ED883F6812AF447B9B0CE220DA5EA9E0F58012FE
-
-Replace the object ID in the link above with the object ID of the Example NFT you observed in your own command output to see it in Sui Explorer:
+Now you can view the created object in the [Sui Explorer](https://explorer.devnet.sui.io) by appending the object ID to:
+https://explorer.devnet.sui.io/objects/
 
 ![Example NFT](../../static/example-nft.png "Example NFT")
 
@@ -198,8 +196,8 @@ Mutated Objects:
 
 Go to the Sui Explorer to observe a newly created object (ID `2E34983D59E9FC5310CFBAA953D2188E6A84FD21`, in this example). You should see a sword object created with `Magic` property of `42` and `Strength` property of `7` and transferred to the new owner.
 
-As above, replace object ID in the Explorer link with the object ID of the created object you observed in your own command output:
-https://explorer.devnet.sui.io/objects/OBJECT-ID
+As above, replace the object ID in the Explorer link with the object ID of the created object you observed in your own command output, appended to:
+https://explorer.devnet.sui.io/objects/
 
 ![Magic sword](../../static/magic-sword.png "Magic sword")