browser-tweaks: note privacy.trackingprotection.fingerprinting is FF67+ (#1012)

Resolves: #1010

_includes/sections/browser-tweaks.html

@@ -20,10 +20,10 @@
   <dd>A result of the <a href="https://wiki.mozilla.org/Security/Tor_Uplift">Tor Uplift</a> effort, this preference makes Firefox more resistant to browser fingerprinting.</dd>
 
   <dt>privacy.trackingprotection.fingerprinting.enabled = true</dt>
-  <dd>Blocks Fingerprinting</dd>  
+  <dd>[FF67+] Blocks Fingerprinting</dd>  
 
   <dt>privacy.trackingprotection.cryptomining.enabled = true</dt>
-  <dd>Blocks CryptoMining</dd>  
+  <dd>[FF67+] Blocks CryptoMining</dd>  
 
   <dt>privacy.trackingprotection.enabled = true</dt>
   <dd>This is Mozilla's new built-in tracking protection. It uses Disconnect.me filter list, which is redundant if you are already using uBlock Origin 3rd party filters, therefore you should set it to false if you are using the add-on functionalities.</dd>