Fix element class name for the data directory title.

app/settings.ejs

@@ -250,7 +250,7 @@
             </div>
             <div class="settingsFileSelContainer">
                 <div class="settingsFileSelContent">
-                    <div class="settingsTabHeaderText" id="settingsDataDirTitle">Data Directory</div>
+                    <div class="settingsFieldTitle" id="settingsDataDirTitle">Data Directory</div>
                     <div class="settingsFileSelActions">
                         <div class="settingsFileSelIcon">
                             <svg class="settingsFileSelSVG">