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/pldmtool/pldm_fw_update_cmd.cpp b/pldmtool/pldm_fw_update_cmd.cpp
index 3466e54..25ab259 100644
--- a/pldmtool/pldm_fw_update_cmd.cpp
+++ b/pldmtool/pldm_fw_update_cmd.cpp
@@ -41,7 +41,7 @@
     {PLDM_FD_AUX_STATE_IN_PROGRESS_OR_SUCCESS,
      "AuxState is In Progress or Success"},
     {PLDM_FD_TIMEOUT, "Timeout occurred while performing action"},
-    {PLDM_FD_GENERIC_ERROR, "Generic Error has occured"}};
+    {PLDM_FD_GENERIC_ERROR, "Generic Error has occurred"}};
 
 const std::map<uint8_t, const char*> fdReasonCode{
     {PLDM_FD_INITIALIZATION, "Initialization of firmware device has occurred"},