Update appendices.rst

Author: cjakeman

Source/Documentation/Manual/appendices.rst

@@ -724,7 +724,7 @@ this is not advisable.
 INI File and User Settings
 ==========================
 
-By default, Open Rails keeps the user's settings and options in the Window's Registry.
+By default, Open Rails keeps the user's settings and options in the Windows Registry.
 
 If you want to have a set of alternative settings which bypass the settings kept in the Registry,
 then you can use an INI text file for this.
@@ -733,4 +733,4 @@ Create an empty file OpenRails.ini in the same folder as OpenRails.exe and start
 The program will attempt to load settings from the file, using default values for settings that 
 cannot be found and populates the INI file with these settings.
 
-If you change the settings and options, then these will be saved automatically to the INI file.
+If you change the settings and options, then these will be saved automatically to the INI file.