function addFlagsForFAQData(oChainObject) {
		if (!sFAQDir) {
			return oChainObject;
		}
		const slibName = oChainObject.fileData.library;
		oChainObject.fileData.symbols.forEach(function(symbol) {
			const sfile = symbol.name.replace(slibName, "").replace(/[.]/g, "/") + ".md";
			if (fs.existsSync(path.join(sFAQDir, sfile))) {
				symbol.hasFAQ = true;
			}
		});
		return oChainObject;
	}
Check for existence of FAQ data
(FAQ data must be defined as *.md files in the <code>sFAQDir</code>)
and add a boolean flag in case it exists

@param oChainObject chain object