4.4.2 introduces a breaking change that the variable in a catch clause
is now `unknown` type. So, we need to cast the `e`, `err`, or `error`
variables to type `Error`.
- Rename "toolrunnner" (three 'n') to "toolrunner"
- Rename "relativeFilepaht" to "relativeFilepath"
- Fix various typos in documentation & comments
- Fix typos in logs and test names