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: I014e7670ca4ba57f7e1b80e96c001474cf7a6676
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/image_verify.hpp b/image_verify.hpp
index efd3873..34a81c8 100644
--- a/image_verify.hpp
+++ b/image_verify.hpp
@@ -208,10 +208,10 @@
     /** @brief Path of public key and hash function files */
     std::filesystem::path signedConfPath;
 
-    /** @brief key type defined in mainfest file */
+    /** @brief key type defined in manifest file */
     Key_t keyType;
 
-    /** @brief Hash type defined in mainfest file */
+    /** @brief Hash type defined in manifest file */
     Hash_t hashType;
 };