fixes MicrosoftDocs/sql-docs/issues/5750 -- filename typo

Author: WilliamAntonRohm

docs/reporting-services/install-windows/migrate-a-reporting-services-installation-native-mode.md

@@ -127,7 +127,7 @@ For more information about changes in SQL Server Reporting Services, see the Upg
 
     2. Rswebapplication.config  
 
-    3. Rssvrpolicy.config  
+    3. Rssrvpolicy.config  
 
     4. Rsmgrpolicy.config