Codespell 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: I2cf277da6cc16322eff8adaba83e1ea98dd4cb41
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/test_lists/skip_test_witherspoon b/test_lists/skip_test_witherspoon
index e5be694..725c200 100644
--- a/test_lists/skip_test_witherspoon
+++ b/test_lists/skip_test_witherspoon
@@ -56,7 +56,7 @@
 -e Verify_Network_Interface_Recovery
 # Skipping RAS test cases
 -e Host_RAS
-# Skip multi threading test cuasing XML parser failure.
+# Skip multi threading test causing XML parser failure.
 -e Stress_BMC_REST_Server
 -e Stress_BMC_SSH_Server
 -e Stress_BMC_IPMI_Server