Update Game Not Detected section of FAQ

* Add a paragraph about manually entering the install path.

docs/help/LOOT-FAQs.html

@@ -142,6 +142,7 @@ title: FAQs
   <dd>
     <p>Steam removes the game's Registry entry when the game is updated or its cache is verified. Run the game's launcher to add the Registry entry back again. LOOT will then be able to detect the game.</p>
     <p>Another cause may be that the game is installed in a location where you do not have read permissions. In this case, LOOT cannot read your plugins and treats the game as undetected. Try checking the permissions of the game's path and ensuring you have read access.</p>
+    <p>You can also enter your game's install path manually in LOOT's settings menu. In the menu, select your game's settings entry on the left-hand side (if it's not there, delete LOOT's settings found at <code>%LOCALAPPDATA%\LOOT\settings.toml</code> to restore them to default or make a new entry for your game) and enter your install path in the "Install Path" field.</p>
   </dd>
 
   <dt id="line-breaks">When LOOT updates the load order, it removes line breaks from <code>plugins.txt</code> and <code>loadorder.txt</code>. Won't this break something?</dt>