fix: invalid property name "stop-color" (#6947)

Author: NickNaso

apps/site/components/Icons/Social/Mastodon.tsx

@@ -26,8 +26,8 @@ const Mastodon: FC<SVGProps<SVGSVGElement>> = props => (
         y2="79"
         gradientUnits="userSpaceOnUse"
       >
-        <stop stop-color="#6364FF" />
-        <stop offset="1" stop-color="#563ACC" />
+        <stop stopColor="#6364FF" />
+        <stop offset="1" stopColor="#563ACC" />
       </linearGradient>
     </defs>
   </svg>