Moved Azure link, breaking builds.

Looks like https://blogs.technet.microsoft.com/srinathv/2018/02/07/how-to-add-a-public-ip-address-to-azure-vm-for-vm-failed-over-using-asr/
moved to https://docs.microsoft.com/en-us/azure/site-recovery/concepts-public-ip-address-with-site-recovery

Which is stopping us from building.

site/content/en/docs/Installation/_index.md

@@ -236,7 +236,7 @@ az network nsg rule create \
 
 #### Creating and assigning Public IPs to Nodes
 
-Nodes in AKS don't get a Public IP by default. To assign a Public IP to a Node, find the Resource Group where the AKS resources are installed on the [portal](https://portal.azure.com) (it should have a name like `MC_resourceGroupName_AKSName_westeurope`). Then, you can follow the instructions [here](https://blogs.technet.microsoft.com/srinathv/2018/02/07/how-to-add-a-public-ip-address-to-azure-vm-for-vm-failed-over-using-asr/) to create a new Public IP and assign it to the Node/VM. For more information on Public IPs for VM NICs, see [this document](https://docs.microsoft.com/azure/virtual-network/virtual-network-network-interface-addresses). If you are looking for an automated way to create and assign Public IPs for your AKS Nodes, check [this project](https://github.com/dgkanatsios/AksNodePublicIPController).
+Nodes in AKS don't get a Public IP by default. To assign a Public IP to a Node, find the Resource Group where the AKS resources are installed on the [portal](https://portal.azure.com) (it should have a name like `MC_resourceGroupName_AKSName_westeurope`). Then, you can follow the instructions [here](https://docs.microsoft.com/en-us/azure/site-recovery/concepts-public-ip-address-with-site-recovery) to create a new Public IP and assign it to the Node/VM. For more information on Public IPs for VM NICs, see [this document](https://docs.microsoft.com/azure/virtual-network/virtual-network-network-interface-addresses). If you are looking for an automated way to create and assign Public IPs for your AKS Nodes, check [this project](https://github.com/dgkanatsios/AksNodePublicIPController).
 
 Continue to [Installing Agones](#installing-agones).