pat date-picker demo: Fix url.

Author: thet

src/pat/date-picker/index.html

@@ -76,7 +76,7 @@
                     >Multilingual support with German translations
                     <input
                         class="pat-date-picker"
-                        data-pat-date-picker="i18n: /src/pat/date-picker/i18n.json;"
+                        data-pat-date-picker="i18n: ./i18n.json;"
                         type="date"
                     />
                 </label>