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/http_client.hpp b/http/http_client.hpp
index 58086dd..e6a7db1 100644
--- a/http/http_client.hpp
+++ b/http/http_client.hpp
@@ -197,7 +197,7 @@
         if (requestDataQueue.empty())
         {
             // TODO: Having issue in keeping connection alive. So lets close if
-            // nothing to be trasferred.
+            // nothing to be transferred.
             doClose();
 
             BMCWEB_LOG_DEBUG << "requestDataQueue is empty\n";
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();
             }
diff --git a/http/utility.h b/http/utility.h
index 59abc8d..4792f6f 100644
--- a/http/utility.h
+++ b/http/utility.h
@@ -670,7 +670,7 @@
     output.reserve(((inputLength + 2) / 3) * 4);
 
     // for each 4-bytes sequence from the input, extract 4 6-bits sequences by
-    // droping first two bits
+    // dropping first two bits
     // and regenerate into 3 8-bits sequences
 
     for (size_t i = 0; i < inputLength; i++)