fix(issues): handle links with escaped angle brackets

[caugner]

Description

Handle links with escaped angle brackets when fixing issues.

Motivation

Ensure links with escaped angle brackets can be fixed.

Additional details

Resolves the following errors when running cargo run fix-flaws --locale ru:

page: Could not locate '/ru/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#<<_(Left_shift)' before offset 0 (searched region: "") locale="ru" slug="Web/JavaScript/Guide/Expressions_and_operators" file="/path/to/mdn/translated-content/files/ru/web/javascript/guide/expressions_and_operators/index.md"
page: Could not locate '/ru/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#>>_(Sign-propagating_right_shift)' before offset 0 (searched region: "") locale="ru" slug="Web/JavaScript/Guide/Expressions_and_operators" file="/path/to/mdn/translated-content/files/ru/web/javascript/guide/expressions_and_operators/index.md"
page: Could not locate '/ru/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#>>>_(Zero-fill_right_shift)' before offset 0 (searched region: "") locale="ru" slug="Web/JavaScript/Guide/Expressions_and_operators" file="/path/to/mdn/translated-content/files/ru/web/javascript/guide/expressions_and_operators/index.md"

Related issues and pull requests

[github-actions]

2addca4 was deployed to: https://rari-pr643.review.mdn.allizom.net/