Documentation: filesystems_part2: fix typos

[hanyujie2002]

linux/Documentation/teaching/labs/filesystems_part2.rst

Lines 376 to 389 in 766862c

	.. code-block:: c
	struct inode_operations minix_dir_inode_operations = {
	.create = minix_create,
	.lookup = minix_lookup,
	.link = minix_link,
	.unlink = minix_unlink,
	.symlink = minix_symlink,
	.mkdir = minix_mkdir,
	.rmdir = minix_rmdir,
	.mknod = minix_mknod,
	//...
	};

linux/Documentation/teaching/labs/filesystems_part2.rst

Lines 432 to 436 in 766862c

	Creating a link
	---------------
	The link creation function (hard link) is indicated by the ``symlink`` field in the ``inode_operations`` structure.
	In the minix case, the function is :c:func:`minix_link`.

minix_link correspond to link in the first snippet, so the simlink should be modified to link in the second snippet

[dbaluta]

Looks like there is a problem building the documentation:

Exception occurred:
  File "/usr/lib/python3/dist-packages/jinja2/sandbox.py", line 350, in is_safe_callable
rending /home/runner/work/linux/linux/Documentation/output/teaching/_images/ditaa-cc9a2e995be74ee99646ea4bf0e551d766fa92ef.png
    return not (getattr(obj, 'unsafe_callable', False) or
jinja2.exceptions.UndefinedError: 'css_tag' is undefined
The full traceback has been saved in /tmp/sphinx-err-k0tebpfp.log, if you want to report the issue to the developers.

Anyone care to investigate?

[hanyujie2002]

@dbaluta I fixed it in #380

[dbaluta]

@hanyujie2002 thanks!