[MPT-9] Mentors: Include link to LinkedIn page

[jcc-kh]

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_MPT-9

[Halim-Shams]

Hey can you tell me a little more about it, so I can work on this project

[jcc-kh]

On the pop up window of the description for each mentor (which includes their company, the keyword tags etc.), there can be a button linking to their linkedin page so it'll be more convenient for users to find out more details about them