winecfg: Add a full stop to an error message.

programs/winecfg/winecfg.rc

@@ -83,7 +83,7 @@ BEGIN
     IDS_DRIVE_REMOTE            "Network share"
     IDS_DRIVE_REMOVABLE         "Floppy disk"
     IDS_DRIVE_CDROM             "CD-ROM"
-    IDS_DRIVE_LETTERS_EXCEEDED  "You cannot add any more drives.\n\nEach drive must have a letter, from A to Z, so you cannot have more than 26"
+    IDS_DRIVE_LETTERS_EXCEEDED  "You cannot add any more drives.\n\nEach drive must have a letter, from A to Z, so you cannot have more than 26."
     IDS_SYSTEM_DRIVE_LABEL      "System drive"
     IDS_CONFIRM_DELETE_C        "Are you sure you want to delete drive C?\n\nMost Windows applications expect drive C to exist, and will die messily if it doesn't. If you proceed remember to recreate it!"
     IDS_COL_DRIVELETTER         "Letter"