Update win_perf_counters sample config (#6286)

Remove extra percent from win_perf_counters sample config and have it
mirror the config provided in the Windows package.

etc/telegraf_windows.conf

@@ -244,8 +244,8 @@
       "% Disk Time",
       "% Disk Read Time",
       "% Disk Write Time",
-      "Current Disk Queue Length",
       "% Free Space",
+      "Current Disk Queue Length",
       "Free Megabytes",
     ]
     Measurement = "win_disk"
@@ -311,7 +311,6 @@
       "Standby Cache Reserve Bytes",
       "Standby Cache Normal Priority Bytes",
       "Standby Cache Core Bytes",
-
     ]
     # Use 6 x - to remove the Instance bit from the query.
     Instances = ["------"]