os: fixed typo in Windows version number

Author: fkollmann

src/internal/syscall/windows/symlink_windows.go

@@ -9,6 +9,6 @@ import "syscall"
 const (
 	ERROR_INVALID_PARAMETER syscall.Errno = 87
 
-	// symlink support for CreateSymbolicLink() starting with Windows 10 (1607, v10.0.14393)
+	// symlink support for CreateSymbolicLink() starting with Windows 10 (1703, v10.0.14972)
 	SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE = 0x2
 )

src/os/file_windows.go

@@ -379,7 +379,7 @@ func Symlink(oldname, newname string) error {
 
 	if err == windows.ERROR_INVALID_PARAMETER {
 		// the unprivileged create flag is unsupported
-		// below Windows 10 (1607, v10.0.14393). retry without it.
+		// below Windows 10 (1703, v10.0.14972). retry without it.
 		flags &^= windows.SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
 
 		err = syscall.CreateSymbolicLink(n, o, flags)