Update TESTED.md

Author: Tech-FZ

doc/TESTED.md

@@ -8,8 +8,8 @@ Such a program needs tests in its lifetime. That's why I make this compatibility
 | ------------------------------------------ | ------------ | --------- | ------------------------------------------------------------------------------ |
 | Windows 95 C                               | i386         | Yes       |                                                                                |
 | Windows NT 4.0 Workstation Service Pack 1  | MIPS64el     | Yes       | Needs external BIOS                                                            |
-| Windows NT 4.0 Workstation Service Pack 1  | i386         | Yes       | Use only 256 colors and 800x600 pixels or else there are mouse problems        |
-| Windows NT 4.0 Workstation Service Pack 6a | i386         | Yes       | Use only 256 colors and 800x600 pixels or else there are mouse problems        |
+| Windows NT 4.0 Workstation Service Pack 1  | i386         | Yes       | Use only 256 colours and 800x600 pixels or else there are mouse problems       |
+| Windows NT 4.0 Workstation Service Pack 6a | i386         | Yes       | Use only 256 colours and 800x600 pixels or else there are mouse problems       |
 | Windows 98 Second Edition                  | i386         | Partially | Prepare to boot Safe Mode with VBox; don't add sound card to installed systems |
 | Windows 2000 Professional Service Pack 4   | i386         | No        |                                                                                |
 | Windows XP Home Edition Service Pack 3     | i386         | Yes       |                                                                                |