Fix color on newsletter input

Author: joladev

lib/jola_dev_web/controllers/page_html/newsletter.html.heex

@@ -21,7 +21,7 @@
           type="email"
           name="email"
           id="bd-email"
-          class="h-10 rounded-md border border-border"
+          class="h-10 rounded-md border border-border text-black px-2 selection:bg-accent"
         />
         <input
           type="submit"