docs: add quiet public as synonym for unlisted

for #1036, #1367

templates/docs.html

@@ -162,7 +162,7 @@ <h3 id="about">About</h3>
 
 <li id="visibility" class="question">Who can see me and my stuff?</li>
 <li class="answer">
-<p>If you haven't enabled the bridge for your account, no one. Once you enable it, Bridgy Fed only bridges fully public profiles and posts and interactions, not unlisted, followers-only, or otherwise private posts or DMs. In other words, bridging your account doesn't expose your profile or posts to anyone new who couldn't already see them before.</p>
+<p>If you haven't enabled the bridge for your account, no one. Once you enable it, Bridgy Fed only bridges fully public profiles and posts and interactions, not unlisted, quiet public, followers-only, or otherwise private posts or DMs. In other words, bridging your account doesn't expose your profile or posts to anyone new who couldn't already see them before.</p>
 </li>
 
 <li id="other-bridges" class="question">What about other bridges?</li>
@@ -305,7 +305,7 @@ <h3 id="general">Using</h3>
   <li>if your server advertises account age (like Mastodon), your account needs to be at least two weeks old
 </ul>
 <li>Bridgy Fed generally only bridges posts going forward; it doesn't backfill older posts from before you enabled it. If you want to see it bridge your posts, try a new one!
-<li>Bridgy Fed <a href="#visibility">only bridges fully public posts and replies</a>, not unlisted, followers-only, mentioned-only, or otherwise non-public ones.
+<li>Bridgy Fed <a href="#visibility">only bridges fully public posts and replies</a>, not unlisted, quiet public, followers-only, mentioned-only, or otherwise non-public ones.
 <li>The Bridgy Fed bot account will follow you back. If your account is set to accept follows, did you accept it? If not, and if you're on the fediverse, your instance won't send Bridgy Fed your posts, so they won't get bridged.
 <li>Have you blocked the Bridgy Fed bot account? If so, that <a href="#opt-out">disables the bridge for your account</a>. Un-block it and then follow it again to re-enable the bridge.</a>
 <li>If you're looking at your bridged account in the fediverse, Bridgy Fed only delivers your posts to fediverse instances where you have at least one follower. (This is how the fediverse works in general.)