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: I153217f4ae8454e3546a59da9fcfe3f83fd04b39
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/src/erase/pattern.cpp b/src/erase/pattern.cpp
index 7855fc9..3d6c27b 100644
--- a/src/erase/pattern.cpp
+++ b/src/erase/pattern.cpp
@@ -25,7 +25,7 @@
 
 void Pattern::writePattern(const uint64_t driveSize, Fd& fd)
 {
-    // static seed defines a fixed prng sequnce so it can be verified later,
+    // static seed defines a fixed prng sequence so it can be verified later,
     // and validated for entropy
     uint64_t currentIndex = 0;