docs: path-lookup: fix HTML entity mojibake

Two cases of "<" somehow turned into "&lt;". I noticed it on
<https://www.kernel.org/doc/html/latest/filesystems/path-lookup.html>.

I've verified that the HTML output is correct with this patch.
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Link: https://lore.kernel.org/r/20200727114527.23944-1-vegard.nossum@oracle.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/filesystems/path-lookup.rst

@@ -76,10 +76,10 @@ tempting to consider that to have an empty final component.  In many
 ways that would lead to correct results, but not always.  In
 particular, ``mkdir()`` and ``rmdir()`` each create or remove a directory named
 by the final component, and they are required to work with pathnames
-ending in "``/``".  According to POSIX_
+ending in "``/``".  According to POSIX_:
 
-  A pathname that contains at least one non- <slash> character and
-  that ends with one or more trailing <slash> characters shall not
+  A pathname that contains at least one non-<slash> character and
+  that ends with one or more trailing <slash> characters shall not
   be resolved successfully unless the last pathname component before
   the trailing <slash> characters names an existing directory or a
   directory entry that is to be created for a directory immediately