Update TOC for FAQ page
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- [Why isn't `bindgen` generating methods for this allowlisted class?](#why-isnt-bindgen-generating-methods-for-this-allowlisted-class)
- [Why isn't `bindgen` generating bindings to inline functions?](#why-isnt-bindgen-generating-bindings-to-inline-functions)
- [Does `bindgen` support the C++ Standard Template Library (STL)?](#does-bindgen-support-the-c-standard-template-library-stl)
+- [How to deal with bindgen generated padding fields?](#how-to-deal-with-bindgen-generated-padding-fields)
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