html_entities: Added new triggers & tests

[Owlree]

Description of new Instant Answer, or changes

Adds new triggers and tests for the html entities goodie.

Related Issues and Discussions

Fixes #4086.

People to notify

Hey, @moollaza, I made another PR since I deleted the previous branch by accident, sorry. I implemented the changes we talked about.

Testing & Review

To be completed by Community Leader (or DDG Staff) when reviewing Pull Request

Pull Request

• Title follows correct format (Specifies Instant Answer + Purpose)
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Instant Answer Page (for new Instant Answers)

• Instant Answer page is correctly filled out and contains:
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  • The IA topics are present and appropriate
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Code

• Adheres to the DuckDuckGo Style Guide
• Behaviour is appropriately tested. If improvement, tests are adequately extended.
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Ready to merge?

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Pull Request Review Guidelines: https://docs.duckduckhack.com/programming-mission/pr-review.html

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Instant Answer Page: https://duck.co/ia/view/html_entities

[daxtheduck]

HTML Entities

Description: A table of HTML entities

Example Query: html entities

Tab Name: Answer

Source: https://dev.w3.org/html5/html-author/charref

These are the important fields from the IA page. Please check these for errors or missing information and update the IA page

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This is an automated message which will be updated as changes are made to the IA page

[moollaza]

@Owlree Thanks! This LGTM 👍