Codespell spelling fixes

These spelling errors were found using
https://github.com/codespell-project/codespell

Tested: Built and ran against validator.
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
Change-Id: I214fe102550295578cfdf0fc58305897d261ce55
diff --git a/http/timer_queue.h b/http/timer_queue.h
index f2a933b..d83cd0e 100644
--- a/http/timer_queue.h
+++ b/http/timer_queue.h
@@ -65,7 +65,7 @@
                 }
 
                 BMCWEB_LOG_DEBUG << "timer call: " << this << ' ' << step;
-                // we know that timer handlers are very simple currenty; call
+                // we know that timer handlers are very simple currently; call
                 // here
                 x.second();
             }