Fixing typo and formatting

client/settings.html

@@ -109,7 +109,7 @@
             <input type="number" name="maxDownloadConcurrency" v-model.number="maxDownloadConcurrency" min="1">
         </label>
         <label for="userAgent" style="display: inline-block;" >
-            <span class="label-body">Specify the User-Agent header specified when downloading podcasts</span>
+            <span class="label-body"The <code>User-Agent</code> header used when downloading podcasts</span>
             <input type="text" class="u-full-width" name="userAgent" v-model="userAgent">
         </label>