Fix spelling mistakes using codespell

This commit corrects various spelling mistakes throughout the
repository. The corrections were made automatically using `codespell`[1]
tool.

[1]: https://github.com/codespell-project/codespell

Change-Id: I539a0c5baa63be240fc1c76367c0af338dd89c7b
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/libpldmresponder/platform.hpp b/libpldmresponder/platform.hpp
index b045d84..e43058e 100644
--- a/libpldmresponder/platform.hpp
+++ b/libpldmresponder/platform.hpp
@@ -320,7 +320,7 @@
      *  @param[in] stateField - The state field data for each of the states,
      * equal to composite effecter count in number
      *  @return - Success or failure in setting the states. Returns failure in
-     * terms of PLDM completion codes if atleast one state fails to be set
+     * terms of PLDM completion codes if at least one state fails to be set
      */
     template <class DBusInterface>
     int setStateEffecterStatesHandler(