Update html_spinner_examples.html

Improved some wording

ex/html_spinner_examples.html

@@ -142,7 +142,7 @@ <h2 style="text-align:center">Motivation</h2>
 that works without images in any HTML layout.
 </p>
 <p>
-Good web interface design shows what's happening.
+Good web interface design lets the user know what's happening.
 A long background process calls for some kind of indicator,
 especially if no other action is possible on the page until
 that process completes (or bails out). The most common indicators are
@@ -155,11 +155,11 @@ <h2 style="text-align:center">Motivation</h2>
 The alternative is designing a new one, or searching through millions of spinner images online.
 But that's not the whole task...
 </p>
-<p>
-What if the client has a color scheme the spinner should fit into?
-Or a typeface whose light weight makes the generic spinner look too bulky?
-Sizing someone's nice downloaded spinner image to fit its spot in the layout also takes time and attention, especially if it's in a line of text.
-</p>
+<ol>
+<li>What if the client has a color scheme the spinner should fit into?</li>
+<li>Or a typeface whose light weight makes the generic spinner look too bulky?</li>
+<li>Or you find a nice downloaded spinner image, but making it fit its spot in the layout also takes time and attention, especially if it's in a line of text.
+</ol>
 </section>
 <hr>
 <section style="max-width: 720px;margin-left:auto;margin-right:auto;">