Fix spelling mistakes

These were found with:
codespell -w $(git ls-files | grep "\.[hc]\(pp\)\?$")

At some point in the future, we might want to get this enabled in CI.

Change-Id: Iccb57b2adfd06a2e177e99db2923fe4e8e329118
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/redfish-core/lib/update_service.hpp b/redfish-core/lib/update_service.hpp
index 2f0cc47..9ab1a3b 100644
--- a/redfish-core/lib/update_service.hpp
+++ b/redfish-core/lib/update_service.hpp
@@ -196,7 +196,7 @@
                                 // allow them time to complete the
                                 // update (probably cycle the
                                 // system) if this expires then
-                                // task will be cancelled
+                                // task will be canceled
                                 taskData->extendTimer(std::chrono::hours(5));
                                 return !task::completed;
                             }