Fix hydration warning due to nested links (#725)

Author: maxrjones

src/components/mdx/link.js

@@ -10,16 +10,14 @@ export const Link = React.forwardRef(function CustomLink(props, ref) {
 
   if (isInternalLink) {
     return (
-      <NextLink href={href} passHref>
-        <ChakraLink ref={ref} {...rest}>
-          {rest.children}
-        </ChakraLink>
-      </NextLink>
+      <ChakraLink as={NextLink} ref={ref} {...rest}>
+        {rest.children}
+      </ChakraLink>
     )
   }
 
   return (
-    <ChakraLink isExternal {...rest} ref={ref}>
+    <ChakraLink isExternal {...rest} as={NextLink} ref={ref}>
       {rest.children}
       {useExternalIcon && <ExternalLinkIcon mx='2px' />}
     </ChakraLink>

src/data/sponsors.js

@@ -4,7 +4,7 @@ export const Sponsors = [
   {
     name: 'CZI',
     logo: '/Chan_Zuckerberg_Initiative.svg',
-    url: 'https://chanzuckerberg.com//',
+    url: 'https://chanzuckerberg.com/',
   },
   { name: 'NVIDIA', logo: '/Nvidia_logo.svg', url: 'https://www.nvidia.com/' },
 ]