Delist Blokada, link to DNS clients & add anchor for them (#1325)

* delist Blokada

Resolves: #1123

* dns: add anchor "clients"

_includes/sections/android-addons.html

@@ -6,16 +6,6 @@
 
 <div class="container-fluid">
 
-  <div class="row mb-2">
-    <div class="col-lg-3 col-sm-12 pt-lg-5">
-      <img src="/assets/img/addons/Blokada.png" height="70" width="200" class="img-fluid d-block mr-auto ml-auto align-middle" alt="Blokada">
-    </div>
-    <div class="col">
-    <h3>Block ads with <a href="https://blokada.org/">Blokada</a></h3>
-    <p><strong>Blokada</strong> works across all of your apps, not only the browser. It doesn't require root, supports both wifi and mobile networks, and is perfectly safe and simple to use. Just turn it on, and it will do the job silently!
-    </div>
-  </div>
-
   <div class="row mb-2">
     <div class="col-lg-3 col-sm-12 pt-lg-5">
       <img src="/assets/img/addons/netguard.png" height="70" width="200" class="img-fluid d-block mr-auto ml-auto align-middle" alt="NetGuard">
@@ -36,4 +26,12 @@
     </div>
   </div>
 
-</div>
+</div>
+
+<h2>See also</h2>
+
+<ul>
+  <li>
+    <a href="/providers/dns#clients">Our DNS page</a> which also has information on encrypting DNS on Android.
+  </li>
+</ul>

_includes/sections/dns.html

@@ -533,7 +533,7 @@
   <li>QNAME Minimization - Run <code>dig +short txt qnamemintest.internet.nl</code> from the command-line (taken from <a href="https://nlnetlabs.nl/downloads/presentations/unbound_qnamemin_oarc24.pdf">this NLnet Labs presentation</a>). If you are on Windows 10, run <code>Resolve-DnsName -Type TXT -Name qnamemintest.internet.nl</code> from the PowerShell. You should see this display: <code>"HOORAY - QNAME minimisation is enabled on your resolver :)!"</code></li>
 </ul>
 
-<h3>Worth Mentioning and Additional Information</h3>
+<h3 id="clients">Worth Mentioning and Additional Information</h3>
 
 <ul>
   <li><strong>Encrypted DNS clients for desktop:</strong>