Clarify protocol choice label

src/gui/optionsdialog.ui

@@ -1356,7 +1356,7 @@ Manual: Various torrent properties (e.g. save path) must be assigned manually</s
               <item>
                <widget class="QLabel" name="label_24">
                 <property name="text">
-                 <string>Enabled protocol:</string>
+                 <string>Peer connection protocol:</string>
                 </property>
                </widget>
               </item>

src/webui/www/private/views/preferences.html

@@ -230,7 +230,7 @@
 
 <div id="ConnectionTab" class="PrefTab invisible">
     <div class="formRow">
-        <label>QBT_TR(Enabled protocol:)QBT_TR[CONTEXT=OptionsDialog]</label>
+        <label>QBT_TR(Peer connection protocol:)QBT_TR[CONTEXT=OptionsDialog]</label>
         <select id="enable_protocol_combobox">
             <option value="0" selected>QBT_TR(TCP and μTP)QBT_TR[CONTEXT=OptionsDialog]</option>
             <option value="1">TCP</option>