update php mail scripts and validation

dist/index.html

@@ -215,7 +215,7 @@
                         <div class="timeline-image"><img class="rounded-circle img-fluid" src="assets/img/about/4.jpg" alt="..." /></div>
                         <div class="timeline-panel">
                             <div class="timeline-heading">
-                                <h4>July 2020</h4>
+                                <h4>July 2021</h4>
                                 <h4 class="subheading">Phase Two Expansion</h4>
                             </div>
                             <div class="timeline-body"><p class="text-muted">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sunt ut voluptatum eius sapiente, totam reiciendis temporibus qui quibusdam, recusandae sit vero unde, sed, incidunt et ea quo dolore laudantium consectetur!</p></div>

src/assets/mail/contact_me.js

@@ -21,7 +21,7 @@ $(function () {
             $this = $("#sendMessageButton");
             $this.prop("disabled", true); // Disable submit button until AJAX call is complete to prevent duplicate messages
             $.ajax({
-                url: "/assets/mail/contact_me.php",
+                url: "/assets/mail/contact_me.php", // Make sure this points to the contact_me.php file on your server
                 type: "POST",
                 data: {
                     name: name,