Revert BO links to planning guide

Author: msftrobiro

articles/sap/workloads/businessobjects-deployment-guide.md

@@ -213,11 +213,11 @@ For data tier, Azure Database as a Service (DBaaS) service provides high availab
 
 ### Availability sets
 
-Availability set is a logical grouping capability for isolating Virtual Machine (VM) resources from each other on being deployed. Azure makes sure of the VMs you place within an Availability Set run across multiple physical servers, compute racks, storage units, and network switches. If a hardware or software failure happens, only a subset of your VMs is affected and your overall solution stays operational. So when virtual machines are placed in availability sets, Azure Fabric Controller distributes the VMs over different [Fault](planning-guide.md#fault-domains) and Update domains to prevent all VMs from being inaccessible because of infrastructure maintenance or failure within one Fault domain.
+Availability set is a logical grouping capability for isolating Virtual Machine (VM) resources from each other on being deployed. Azure makes sure of the VMs you place within an Availability Set run across multiple physical servers, compute racks, storage units, and network switches. If a hardware or software failure happens, only a subset of your VMs is affected and your overall solution stays operational. So when virtual machines are placed in availability sets, Azure Fabric Controller distributes the VMs over different [Fault](https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/sap/workloads/planning-guide.md#fault-domains) and [Upgrade](https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/sap/workloads/planning-guide.md#upgrade-domains) domains to prevent all VMs from being inaccessible because of infrastructure maintenance or failure within one Fault domain.
 
 SAP BI Platform contains many different components and while designing the architecture you have to make sure that each of this component is resilient of any disruption. It can be achieved by placing Azure virtual machines of each component within availability sets. Keep in mind, when you mix VMs of different VM families within one availability set, you may come across problems that prevent you to include a certain VM type into such availability set. So have separate availability set for Web Application, BI Application for SAP BI Platform as highlighted in Architecture Overview.
 
-Also the number of update and fault domains that can be used by an Azure Availability Set within an Azure Scale unit is finite. So if you keep adding VMs to a single availability set, two or more VMs will eventually end in the same fault or update domain. For more information, see the [Azure Availability Sets](planning-guide.md#availability-sets) section of the Azure virtual machines planning and implementation for SAP document.
+Also the number of update and fault domains that can be used by an Azure Availability Set within an Azure Scale unit is finite. So if you keep adding VMs to a single availability set, two or more VMs will eventually end in the same fault or update domain. For more information, see the [Azure Availability Sets](https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/sap/workloads/planning-guide.md#azure-availability-sets) section of the Azure virtual machines planning and implementation for SAP document.
 
 To understand the concept of Azure availability sets and the way availability sets relate to Fault and Upgrade Domains, read [manage availability](../../virtual-machines/availability.md) article.
 
@@ -254,7 +254,7 @@ Azure Storage has different Storage types available for customers and details fo
 
 ### Networking
 
-SAP BOBI is a reporting and analytics BI platform that doesn’t hold any business data. So the system is connected to other database servers from where it fetches all the data and provide insight to users. Azure provides a network infrastructure, which allows the mapping of all scenarios that can be realized with SAP BI Platform like connecting to on-premises system, systems in different virtual network and others. For more information check [Microsoft Azure Networking for SAP Workload](planning-guide.md#azure-networking).
+SAP BOBI is a reporting and analytics BI platform that doesn’t hold any business data. So the system is connected to other database servers from where it fetches all the data and provide insight to users. Azure provides a network infrastructure, which allows the mapping of all scenarios that can be realized with SAP BI Platform like connecting to on-premises system, systems in different virtual network and others. For more information check [Microsoft Azure Networking for SAP Workload](https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/sap/workloads/planning-guide.md#microsoft-azure-networking).
 
 For Database-as-a-Service offering, any newly created database (Azure SQL Database or Azure Database for MySQL) has a firewall that blocks all external connections. To allow access to the DBaaS service from BI Platform virtual machines, you need to specify one or more server-level firewall rules to enable access to your DBaaS server. For more information, see [Firewall rules](../../mysql/concepts-firewall-rules.md) for Azure Database for MySQL and [Network Access Controls](/azure/azure-sql/database/network-access-controls-overview) section for Azure SQL database.