Fix documentation of minor versions

Author: ferki

Win32.pm

@@ -1139,8 +1139,8 @@ Currently known values for ID MAJOR MINOR and BUILD are as follows:
     Windows Server 2008 R2   2      6       1       -
     Windows 8                2      6       2       -
     Windows Server 2012      2      6       2       -
-    Windows 8.1              2      6       2       -
-    Windows Server 2012 R2   2      6       2       -
+    Windows 8.1              2      6       3       -
+    Windows Server 2012 R2   2      6       3       -
     
     Windows 10               2     10       0       -
     Windows Server 2016      2     10       0   14393