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: I78e9d126f19fd9fb2e3f2fa9fe8c2404dc505f82
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/softoff/mainapp.cpp b/softoff/mainapp.cpp
index 7cf0eb7..c6c1858 100644
--- a/softoff/mainapp.cpp
+++ b/softoff/mainapp.cpp
@@ -50,7 +50,7 @@
 
     // Claim the bus. Delaying it until sending SMS_ATN may result
     // in a race condition between this available and IPMI trying to send
-    // message as a reponse to ack from host.
+    // message as a response to ack from host.
     bus.request_name(SOFTOFF_BUSNAME);
 
     // Create the SoftPowerOff object.