Fix HTTP Basic Auth when adding a new feed (#3098)

#fix https://github.com/FreshRSS/FreshRSS/issues/3097
Error from https://github.com/FreshRSS/FreshRSS/pull/3027

app/views/subscription/add.phtml

@@ -29,16 +29,16 @@
 
         <legend><?= _t('sub.feed.auth.configuration') ?></legend>
 		<div class="form-group">
-			<label class="group-name" for="http_user_feed"><?= _t('sub.feed.auth.username') ?></label>
+			<label class="group-name" for="http_user"><?= _t('sub.feed.auth.username') ?></label>
 			<div class="group-controls">
-				<input id="http_user_feed" name="http_user_feed" type="text" autocomplete="off"/>
+				<input id="http_user" name="http_user" type="text" autocomplete="off"/>
 			</div>
 		</div>
 
 		<div class="form-group">
-        <label class="group-name" for="http_pass_feed"><?= _t('sub.feed.auth.password') ?></label>
+        <label class="group-name" for="http_pass"><?= _t('sub.feed.auth.password') ?></label>
 			<div class="group-controls">
-				<input id="http_pass_feed" name="http_pass_feed" type="text" value=" " autocomplete="new-password"/>
+				<input id="http_pass" name="http_pass" type="text" value=" " autocomplete="new-password"/>
 			</div>
 		</div>