docs: fix typos in v5 document fast-xml-parse

[abiriadev]

Purpose / Goal

There are typos in the v5 documents: fast-xml-parse should be fast-xml-parser.

fast-xml-parser/docs/v5/1. Getting Started.md

Lines 6 to 9 in a96b968

	const XMLParser = require("fast-xml-parse/v5/XMLParser")
	const parser = new XMLParser();
	//read xmlData your own
	let result = parser.parse(xmlData, true);

Relevant error message:

 ERR_PNPM_FETCH_404  GET https://registry.npmjs.org/fast-xml-parse: Not Found - 404

fast-xml-parse is not in the npm registry, or you have no permission to fetch it.

So I found and corrected similar typos from v5 document.

Type

Please mention the type of PR

• Bug Fix
• Refactoring / Technology upgrade
• New Feature