Remove some hyphens

Author: MikeRayMSFT

docs/sql-server/index.yml

@@ -60,7 +60,7 @@ landingContent:
         url: ../azure-data-studio/what-is-azure-data-studio.md
       - text: SQL Server on Linux
         url: ../linux/sql-server-linux-overview.md
-      - text: SQL Server on Azure Arc-enabled servers  (preview)
+      - text: SQL Server on Azure Arc enabled servers  (preview)
         url: azure-arc/overview.md
     - linkListType: quickstart
       links:

docs/toc.yml

@@ -10269,7 +10269,7 @@ items:
     href: /azure/sql-data-warehouse/sql-data-warehouse-overview-what-is  # Would 'index.md' be better?
   - name: SQL Server on an Azure VM >
     href: /azure/virtual-machines/windows/sql/virtual-machines-windows-sql-server-iaas-overview
-- name: SQL Server on Azure Arc-enabled servers (preview)
+- name: SQL Server on Azure Arc enabled servers (preview)
   items:
     - name: Overview
       href: sql-server/azure-arc/overview.md