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: I1e57d16dd4e8655d698e272e6ee347d80e2056ba
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/src/usb-dbg.cpp b/src/usb-dbg.cpp
index e2a0081..5f6a50d 100644
--- a/src/usb-dbg.cpp
+++ b/src/usb-dbg.cpp
@@ -656,7 +656,7 @@
                 *dbus, "xyz.openbmc_project.Logging", path,
                 "xyz.openbmc_project.Logging.Entry", "Severity");
 
-            // Only filter critial sel
+            // Only filter critical sel
             if (std::get<std::string>(variant) !=
                 "xyz.openbmc_project.Logging.Entry.Level.Critical")
             {