Reword and reposition the "old name" message

The "Please bear with us as we update..." is obsolete now, so update
the text to something more accurate.

Also make it less prominent, cosmetically and by moving it lower on
the page, since I think it's less important now.

(I'm recycling the hero-intro div class even though it's no longer
part of the intro, just convenience with the CSS.)

Not directly related to, but created while I'm working on the PR for...

Ref: https://issues.redhat.com/browse/EC-1290

Author: simonbaird

website/assets/css/custom.css

@@ -475,12 +475,9 @@ p.big {
 }
 
 .hero-intro p.announcement {
-  margin-top: 2em;
   padding: 1em;
-  border: solid 1px var(--ec-icon-purple);
-  border-radius: 0.25em;
   font-style: italic;
-  font-size: 90%;
+  font-size: 75%;
   color: var(--ec-icon-purple);
 }
 

website/layouts/index.html

@@ -19,7 +19,6 @@
           <div class="hero-intro">
             <p>Securely verify supply chain artifacts, and enforce policies about how they were built and tested, in a manageable, scalable, and declarative way.</p>
 
-            <p class="announcement">Note: Conforma was previously known as "Enterprise Contract", often abbreviated as "EC". Please bear with us as we update the documentation and other resources to use the new name.</p>
           </div>
 
           <div class="hero-links">{{ .Content }}</div>
@@ -51,6 +50,11 @@
 
           </div>
         </div>
+
+          <div class="hero-intro">
+            <p class="announcement">Note that Conforma was originally known as "Enterprise Contract". You might find it still refered to as "Enterprise Contract", or "EC" in some of the older content on this website.</p>
+          </div>
+
         <div class="divider">
           {{ partial "svg-wave-divider.html"}}
         </div>