how to add link in readme.md code example

Example 1: how to create link in readme.md

[a link] (https://github.com/user/repo/blob/branch/other_file.md)

Example 2: readme link

[Click me to go to Google!](https://www.google.com)

Example 3: how to add link to github readme

[I'm an inline-style link](https://www.google.com)

[I'm an inline-style link with title](https://www.google.com "Google's Homepage")

[I'm a reference-style link][Arbitrary case-insensitive reference text]

[I'm a relative reference to a repository file](../blob/master/LICENSE)

[You can use numbers for reference-style link definitions][1]

Or leave it empty and use the [link text itself].

URLs and URLs in angle brackets will automatically get turned into links. 
http://www.example.com or <http://www.example.com> and sometimes 
example.com (but not on Github, for example).

Some text to show that the reference links can follow later.

[arbitrary case-insensitive reference text]: https://www.mozilla.org
[1]: http://slashdot.org
[link text itself]: http://www.reddit.com

Example 4: adding link to heading readme.md

/*
Here is javascript code for automatically getting link attached to content of readme.md file.
Full Code - https://gist.github.com/SBZed/490f5d9eac525de02f610a28f0c9453c
*/

LinkHeadingToContent(headingText) {
		headingList = headingText.split('\n');
		headingList.map((heading, index) => {
			const firstDigitIndex = heading.search(/\d/);
			const anchorText = heading
				.toLowerCase()
				.replace(/[^a-z\d\s]/g, '')
				.trim()
				.replace(/ /g, '-');
			headingList[index] =
				[heading.slice(0, firstDigitIndex), '[', heading.slice(firstDigitIndex)].join('') +
				'](#' +
				anchorText +
				')';
		});
  
		return headingList.join('\n');
}

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