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/chassis.hpp b/redfish-core/lib/chassis.hpp
index 72f5011..06ce583 100644
--- a/redfish-core/lib/chassis.hpp
+++ b/redfish-core/lib/chassis.hpp
@@ -224,7 +224,7 @@
     }
     if (upstreamChassisPaths.size() > 1)
     {
-        BMCWEB_LOG_ERROR("{} is contained by mutliple chassis", chassisId);
+        BMCWEB_LOG_ERROR("{} is contained by multiple chassis", chassisId);
         messages::internalError(asyncResp->res);
         return;
     }