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/examples/bios/integer_attrs.json b/libpldmresponder/examples/bios/integer_attrs.json
index aecc26d..672c440 100644
--- a/libpldmresponder/examples/bios/integer_attrs.json
+++ b/libpldmresponder/examples/bios/integer_attrs.json
@@ -23,7 +23,7 @@
             "default_value": 2
         },
         {
-            // This atttribute has invalid default value or scalar_increment, when
+            // This attribute has invalid default value or scalar_increment, when
             // scalar_increment=2 and lower_bound=1, default_value must be 1, 3, 5...
             "attribute_name": "INTEGER_INVALID_CASE",
             "lower_bound": 1,