broken links solved in readme.md

[SATYAM1548]

Readme had Contributing guidelines link broken and open issue link redirected to target place

Link to issue this resolves

Fixes {https://github.com/brittanyjoiner15/eui-event-template/issues/117}

• [x] Readme had Contributing guidelines link broken and open issue link redirected to target place

description :

• [x] directed issue link to target place and corrected Contributing guideline link

• [x] (https://github.com/brittanyjoiner15/eui-event-template/issues/117)

• [x]

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