target self pre sponsor

cansat/components/icons.tsx

@@ -183,4 +183,4 @@ export const SearchIcon = (props: IconSvgProps) => (
       strokeWidth="2"
     />
   </svg>
-);
+);

cansat/components/navbar.tsx

@@ -97,6 +97,7 @@ export const Navbar = () => {
             as={Link}
             className="text-sm font-normal text-default-600 bg-default-100"
             href={siteConfig.links.sponsor}
+            target="_self"
             startContent={<HeartFilledIcon className="text-danger" />}
             variant="flat"
           >