Tweak text.

whatformat/templates/landing.html

@@ -13,9 +13,9 @@
     </header>
     <main>
         <p>
-            Auto-detect the <a href="https://strftime.org/" target="_blank">Format String</a> of your date.
+            Auto-detect the <a href="https://strftime.org/" target="_blank">Format String</a> of your date/time.
         </p>
-        <form id="detect-format"><input id="date" name="date" value="{{ date_string if date_string }}" placeholder="January 1, 2000"/></form>
+        <form id="detect-format"><input id="date" name="date" value="{{ date_string if date_string }}" placeholder="Enter a date and/or time here."/></form>
         <section id="format">
         </section>
     </main>