fix broken link

docs/advanced/sighash-type.md

@@ -153,7 +153,7 @@ Sighash here only affects contracts that access `ScriptContext` in their public
 
 Let us use the [Counter](../how-to-write-a-contract/stateful-contract.md) contract as an example. It simply records how many times it has been called since deployment.
 
-Noted that the `@method` [decorator](../how-to-write-a-contract/how-to-write-a-contract.md#method-decorator) takes a sighash type as a parameter, whose default is `ALL`. According to the [doc](../how-to-write-a-contract/scriptcontext.md#sighash-type),  `hashOutputs` is the double SHA256 of the serialization of **all outputs** when the sighash type is `ALL`. The [default calling transaction builder](../how-to-deploy-and-call-a-contract/how-to-customize-a-contract-tx.md#default-1) adds a change output when necessary. That's why we need to add a change output when building outputs of the spending transaction in the public method: we need to build all the outputs that are included in `hashOutputs`. Otherwise, contract call will fail.
+Noted that the `@method` [decorator](../how-to-write-a-contract/basics#method-decorator) takes a sighash type as a parameter, whose default is `ALL`. According to the [doc](../how-to-write-a-contract/scriptcontext.md#sighash-type),  `hashOutputs` is the double SHA256 of the serialization of **all outputs** when the sighash type is `ALL`. The [default calling transaction builder](../how-to-deploy-and-call-a-contract/how-to-customize-a-contract-tx.md#default-1) adds a change output when necessary. That's why we need to add a change output when building outputs of the spending transaction in the public method: we need to build all the outputs that are included in `hashOutputs`. Otherwise, contract call will fail.
 
 The following [transaction](https://test.whatsonchain.com/tx/845f22b728deb23acacbc6f58f23ffde9c3e2be976e08c57f2bdcb417e3eacc5) is a contract calling transaction of `Counter`. As you can see, it contains two outputs: one for the new state, the other for change.