Fix lint errors

pages/sitemap.xml.js

@@ -2,9 +2,8 @@ import {jwennSlugs} from '../lib/oki-api'
 
 const url = process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost'
 
-const createSitemap = teks => {
-  return (
-    `<?xml version="1.0" encoding="UTF-8"?>
+const createSitemap = teks => (
+  `<?xml version="1.0" encoding="UTF-8"?>
     <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
       <url>
         <loc>${url}</loc>
@@ -19,18 +18,15 @@ const createSitemap = teks => {
         <priority>0.6</priority>
       </url>
         ${teks
-      .map(m => {
-        return `
+    .map(m => `
                     <url>
                         <loc>${`${url}/teks/${m}`}</loc>
                     </url>
-                `
-      })
-      .join('')}
+                `)
+    .join('')}
     </urlset>
     `
-  )
-}
+)
 
 export default function Sitemap() {
   return null