updates headshots and team page (#4594)

# Description and Motivation
- adds new headshots for eric and kim
- deletes old headshots
- updates team page

## Has this been tested? How?
tests passing

## Screenshots (if appropriate)

## Types of changes
- New content or feature

## New frontend preview link is below in the Netlify comment 😎

Author: kccrtv

frontend/src/assets/team/CincoK.png

@@ -138,7 +138,7 @@ export default function AboutUsPage() {
                   <HetLazyLoader offset={300} height={181} once>
                     <img
                       src={leader.imageUrl}
-                      alt=''
+                      alt={leader.name}
                       className='inline-block max-w-team-headshot rounded-md'
                     />
                   </HetLazyLoader>

frontend/src/assets/team/CincoKim.jpg

@@ -7,7 +7,7 @@ import PartnerGilead from '../../assets/partners/PartnerGilead.png'
 import PartnerGoogle from '../../assets/partners/PartnerGoogle.png'
 import PartnerSatcher from '../../assets/partners/PartnerSatcher.png'
 import Allyson from '../../assets/team/BeltonA.png'
-import Kim from '../../assets/team/CincoKim.jpg'
+import Kim from '../../assets/team/CincoK.png'
 import Megan from '../../assets/team/DouglasMegan.jpg'
 import Ben from '../../assets/team/HammondBen.jpg'
 import Jammie from '../../assets/team/HopkinsJammie.jpg'
@@ -16,7 +16,7 @@ import Donrie from '../../assets/team/PurcellDonrie.png'
 import DrHH from '../../assets/team/SHarris-Hooker.jpg'
 import Shaneeta from '../../assets/team/ShaneetaJohnson.png'
 import Maisha from '../../assets/team/StandiferM.png'
-import Eric from '../../assets/team/WarrenEric.png'
+import Eric from '../../assets/team/WarrenE.png'
 
 export const LEADERSHIP_TEAM = [
   {