fix(markdown): fix query parsing and absolute link fallback in linksPlugin (close #1536)

[Mister-Hope]

Closes #1536

• Now queries are preserved instead of being removed
• Absolute link is null when a link is relative and there is no markdown file info

This PR is based on #1521

[coveralls]

Pull Request Test Coverage Report for Build 9093050179

Details

• 8 of 8 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.09%) to 41.096%

---

Totals
Change from base Build 9088295155:	0.09%
Covered Lines:	688
Relevant Lines:	1716

---

💛 - Coveralls

[Mister-Hope]

What test cases is not being updated? This PR is not introducing any new functions, while I already updated existing ones.