Update first contribution page (#5182)
Update first contribution page (#5182)

* contrib-guide: apply styleguide to first-contribution page

* Continuing updates to your first contribution page

Continuing updates to your-first-contribution page to align with style guide

* Update first-contribution.md

Resolved suggested changes to your-first-contribution page

* Update first-contribution.md

Continued making changes to your-first-contribution to align with Kubernetes Developer Style guide per suggested changes

* Update first-contribution.md

Updated your-first-contribution page to resolve suggested changes
kubernetes/community,kubernetes/community,kubernetes/community