Documentation: fix typo in dynamic-debug howto

Signed-off-by: Jade Lovelace <lists@jade.fyi>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20231019231655.3162225-1-lists@jade.fyi>

Author: Jade Lovelace

Documentation/admin-guide/dynamic-debug-howto.rst

@@ -259,7 +259,7 @@ Debug Messages at Module Initialization Time
 
 When ``modprobe foo`` is called, modprobe scans ``/proc/cmdline`` for
 ``foo.params``, strips ``foo.``, and passes them to the kernel along with
-params given in modprobe args or ``/etc/modprob.d/*.conf`` files,
+params given in modprobe args or ``/etc/modprobe.d/*.conf`` files,
 in the following order:
 
 1. parameters given via ``/etc/modprobe.d/*.conf``::