Fix typo in UnityHelperScriptsGuide.md
An `e` is missing in`suit_setup` in the `my_config.yml`.
@@ -74,7 +74,7 @@ to love the next section of this document.
- stdio.h
- microdefs.h
:cexception: 1
- :suit_setup: "blah = malloc(1024);"
+ :suite_setup: "blah = malloc(1024);"
:suite_teardown: "free(blah);"
```
