Update monitor-disk-usage.md

Author: PiJoCoder

docs/relational-databases/performance-monitor/monitor-disk-usage.md

@@ -36,6 +36,7 @@ manager: craigg
 -   Isolating Disk Activity That [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] Creates  
 
  For more information see, [Monitoring Disk Usage](https://social.technet.microsoft.com/wiki/contents/articles/monitoring-disk-usage.aspx)  
- For more information on how to troubleshoot I/O issue in SQL Server see [Slow I/O - SQL Server and disk I/O performance](https://techcommunity.microsoft.com/t5/SQL-Server-Support/Slow-I-O-SQL-Server-and-disk-I-O-performance/ba-p/333983)
+ 
+ For more information on how to troubleshoot I/O issues in SQL Server see [Slow I/O - SQL Server and disk I/O performance](https://techcommunity.microsoft.com/t5/SQL-Server-Support/Slow-I-O-SQL-Server-and-disk-I-O-performance/ba-p/333983)