change the notice about email to be more generic

We make the note about something changing the subject to be more generic
so that it may both better "stand the test of time" (as the expression
goes) and be more generic to be better "future proof" (as the expression
also goes).

Performed `make quick_www` to update the HTML pages.

TODO: Add images and/oor text blocks to steps in `next/register.md`.

next/register.html

@@ -447,16 +447,13 @@ in order to register for the IOCCC.</p>
 <p>Look for an automated email message from the FreeLists List Manager (<em>ecartis@freelists.org</em>).</p>
 <p>The email message will have the subject:</p>
 <pre><code>Subscription consent for &#39;ioccc28-reg&#39;</code></pre>
+<p><strong>NOTE</strong>: Be aware that your email service, application and/or Internet
+service provider may modify email subject lines. For example, some string
+may have been prepended or appended to the subject line. Be aware of
+this when you search for the Subscription consent” email.</p>
 <p><strong>NOTE</strong>: The “Subscription consent” email is usually sent by the FreeLists
 List Manager within a minute after clicking the <strong>((Next &gt;&gt;))</strong> button.
 If you don’t see the “Subscription consent” email, check your spam folder.</p>
-<p><strong>IMPORTANT NOTE FOR APPLE DEVICES</strong>: recently Apple has decided to modify subject lines
-from emails that are ‘unchecked’ so the subject might look instead like:</p>
-<pre><code>***UNCHECKED*** Subscription consent for &#39;ioccc28-reg&#39;</code></pre>
-<p>With phones it can take almost the entire preview so if you’re using an Apple
-product (like an iPad, iPhone or Mac) make sure to check for this. It appears to
-happen on all devices as it is on their end (their MTA), not users. Yes this
-even happens when the recipient address is not an Apple address!</p>
 <p><strong>NOTE</strong>: If are having trouble receiving the “Subscription consent”
 email, <a href="../contact.html">Contact the IOCCC</a>, and you have tried
 several times, ask the <a href="../judges.html">IOCCC judges</a> for assistance.</p>

next/register.md

@@ -35,22 +35,15 @@ The email message will have the subject:
 Subscription consent for 'ioccc28-reg'
 ```
 
+**NOTE**: Be aware that your email service, application and/or Internet
+service provider may modify email subject lines.  For example, some string
+may have been prepended or appended to the subject line.  Be aware of
+this when you search for the Subscription consent" email.
+
 **NOTE**: The "Subscription consent" email is usually sent by the FreeLists
 List Manager within a minute after clicking the **((Next >>))** button.
 If you don't see the "Subscription consent" email, check your spam folder.
 
-**IMPORTANT NOTE FOR APPLE DEVICES**: recently Apple has decided to modify subject lines
-from emails that are 'unchecked' so the subject might look instead like:
-
-```
-***UNCHECKED*** Subscription consent for 'ioccc28-reg'
-```
-
-With phones it can take almost the entire preview so if you're using an Apple
-product (like an iPad, iPhone or Mac) make sure to check for this. It appears to
-happen on all devices as it is on their end (their MTA), not users. Yes this
-even happens when the recipient address is not an Apple address!
-
 **NOTE**: If are having trouble receiving the "Subscription consent"
 email, [Contact the IOCCC](../contact.html), and you have tried
 several times, ask the [IOCCC judges](../judges.html) for assistance.