Fix typos in contrib/

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9235

contrib/pyzfs/docs/source/conf.py

@@ -291,7 +291,7 @@ autodoc_member_order = 'bysource'
 
 #######################
 # Neutralize effects of function wrapping on documented signatures.
-# The affected signatures could be explcitly placed into the
+# The affected signatures could be explicitly placed into the
 # documentation (either in .rst files or as a first line of a
 # docstring).
 import functools