Spelling fixes

Spelling errors found using github.com/lucasdemarchi/codespell
A tool to fix common misspellings.
This tool is licensed under GNU General Public License, version 2.

Change-Id: I32c896bf6268704843adf188bae2fd0884ed95c5
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/Util.pm b/Util.pm
index 57c82a2..ea6b914 100644
--- a/Util.pm
+++ b/Util.pm
@@ -198,7 +198,7 @@
 
 =item adjustI2CPort(C<I2CPort>)
 
-Returns C<I2CPort> converted from MRW numering scheme to Linux numbering scheme.
+Returns C<I2CPort> converted from MRW numbering scheme to Linux numbering scheme.
 
 =back