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: I1068afac44652ab3d9bfe58bb6e19d359d84f20e
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/utils.hpp b/utils.hpp
index 49f62bf..0d2431f 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -83,7 +83,7 @@
 void createBmcDump(sdbusplus::bus_t& bus);
 
 /** @brief Attempt to locate the obmc-chassis-lost-power@ file
- *    to indicate that an AC loss occured.
+ *    to indicate that an AC loss occurred.
  *
  * @param[in] chassisId  - the chassis instance
  */