Show latest nRF52 bootloader link above picker choices

docs/firmware_picker.md

@@ -24,6 +24,10 @@ from the published firmware assets.
   <div class="firmware-picker-intro" role="note">
     <strong>Current release set</strong>
     <p data-role="release-set">Loading release information...</p>
+    <div class="firmware-picker-actions">
+      <a href="https://github.com/mikecarper/Adafruit_nRF52_Bootloader_OTAFIX/releases/latest">Download latest nRF52 OTAFIX bootloader</a>
+    </div>
+    <p>Choose the bootloader package for your exact board and storage setup. This link always opens the latest stable OTAFIX release.</p>
     <p>
       For a new installation, choose the exact board and role, prefer a
       <strong>FULL / complete profile</strong> when it is available, and select