update email link

docs/index.rst

@@ -8,28 +8,7 @@ Last updated: Mar 14, 2024
 
 .. raw:: html
 
-   <!-- Begin Mailchimp Signup Form -->
-   <link href="//cdn-images.mailchimp.com/embedcode/slim-10_7.css" rel="stylesheet" type="text/css">
-   <style type="text/css">
-      #mc_embed_signup{background:#fff; clear:left; font:14px Helvetica,Arial,sans-serif; }
-      /* Add your own Mailchimp form style overrides in your site stylesheet or in this style block.
-         We recommend moving this block and the preceding CSS link to the HEAD of your HTML file. */
-   </style>
-   <div id="mc_embed_signup">
-   <form action="https://dalenguyen.us8.list-manage.com/subscribe/post?u=a51d489a312958f77170fa75d&amp;id=9168c0bdaf" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate>
-      <div id="mc_embed_signup_scroll" style="width: 100%">
-         <label for="mce-EMAIL">SUBSCRIBE FOR UPDATES</label>
-         <br>
-         <input type="email" value="" name="EMAIL" class="email" id="mce-EMAIL" placeholder="email address" required width="100%">
-         <!-- real people should not fill this in and expect good things - do not remove this or risk form bot signups-->
-         <div style="position: absolute; left: -5000px;" aria-hidden="true"><input type="text" name="b_a51d489a312958f77170fa75d_9168c0bdaf" tabindex="-1" value=""></div>
-         <br><br>
-         <div class="clear"><input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
-      </div>
-   </form>
-   </div>
-
-   <!--End mc_embed_signup-->
+   <iframe src="https://techcater.substack.com/embed" width="480" height="150" style="border:1px solid #EEE; background:white;" frameborder="0" scrolling="no"></iframe>
    <br>