Update src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/TdsParserStateObjectManaged.cs

Co-authored-by: Malcolm Daigle <daiglemalcolm@gmail.com>

Author: twsouthwick

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/TdsParserStateObjectManaged.cs

@@ -81,7 +81,7 @@ internal override void CreatePhysicalSNIHandle(
             string serverName,
             TimeoutTimer timeout,
             out byte[] instanceName,
-            ref string[] spn,
+            ref string[] spns,
             bool flushCache,
             bool async,
             bool parallel,