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/oem/ibm/libpldmresponder/oem_ibm_handler.cpp b/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
index 301de47..263a201 100644
--- a/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
+++ b/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
@@ -446,7 +446,7 @@
     while (pos1 != std::string::npos)
     {
         size_t pos2 = dbusPath.substr(pos1 + 1).find('/') + 1;
-        // Replacing starting from substring to next occurence of char '/'
+        // Replacing starting from substring to next occurrence of char '/'
         dbusPath.replace(pos1, pos2 + 1, "");
         pos1 = dbusPath.find(toFind);
     }