link to 1-2 PoET yaml in creating sawtooth network guide

Signed-off-by: Joseph Livesey <[email protected]>

docs/1.2/app_developers_guide/creating_sawtooth_network.md

@@ -201,7 +201,7 @@ Download the Docker Compose file for a multiple-node network.
 -   For PBFT, download
     [sawtooth-default-pbft.yaml](https://github.com/hyperledger/sawtooth-core/blob/main/docker/compose/sawtooth-default-pbft.yaml)
 -   For PoET, download
-    [sawtooth-default-poet.yaml](https://github.com/hyperledger/sawtooth-core/blob/main/docker/compose/sawtooth-default-poet.yaml)
+    [sawtooth-default-poet.yaml](https://github.com/hyperledger/sawtooth-core/blob/1-2/docker/compose/sawtooth-default-poet.yaml)
 
 ### Step 2: Start the Sawtooth Network