Add codespell link

Author: lefticus

02-Use_the_Tools_Available.md

@@ -260,6 +260,10 @@ Qt Creator can plug into the clang static analyzer.
 [IKOS](https://ti.arc.nasa.gov/opensource/ikos/) is an open source static analyzer, developed by NASA. It is based on the Abstract Interpretation. It is written in C++ and provides an analyzer for C and C++, using LLVM.
 The source code is [available on GitHub](https://github.com/NASA-SW-VnV/ikos).
 
+### codespell 
+
+[codespell](https://github.com/codespell-project/codespell) is a spell checker for your source code.
+
 ## Runtime Checkers
 
 ### Code Coverage Analysis