Fix H020 djLint rule

Not empty tags.

src/plainui/jinja2/plainui/wa_contact.html.j2

@@ -6,7 +6,7 @@
     <meta charset="utf-8">
     <link rel="stylesheet"
           href="{{ static('plainui/%s.css' % (css_scope() ,)) }}?v=202112231340">
-    <title></title>
+    <title>Contact</title>
     <style>
             body {
                 background-color: unset !important;

src/plainui/jinja2/plainui/wa_vcard.html.j2

@@ -6,7 +6,7 @@
     <meta charset="utf-8">
     <link rel="stylesheet"
           href="{{ static('plainui/%s.css' % (css_scope() ,)) }}?v=202112231340">
-    <title></title>
+    <title>Contact Card</title>
     <style>
             body {
                 background-color: #000;