Fix Documentation/filesystems/ramfs-rootfs-initramfs.txt

First a file hello.c is created, then the file hello2.c is compiled.
Change this to hello.c

Signed-off-by: Frans Meulenbroeks <[e-mail]>
Signed-off-by: Rob Landley <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/filesystems/ramfs-rootfs-initramfs.txt

···
     sleep(999999999);
   }
   EOF
-  gcc -static hello2.c -o init
+  gcc -static hello.c -o init
   echo init | cpio -o -H newc | gzip > test.cpio.gz
   # Testing external initramfs using the initrd loading mechanism.
   qemu -kernel /boot/vmlinuz -initrd test.cpio.gz /dev/zero