Corrected spelling.

Author: markofu

source/administration/ulimit.txt

@@ -138,7 +138,7 @@ Substitute the ``-n`` option for any possible value in the output of
 
 The ``/proc`` file-system stores the per-process limits in the
 file system object located at ``/proc/<pid>/limits``, where ``<pid>``
-is the processes :term:`PID` or process identifier. You can use the
+is the process's :term:`PID` or process identifier. You can use the
 following ``bash`` function to return the content of the ``limits``
 object for a process or processes with a given name: