Fix liner warning

Author: fzaninotto

src/companies/CompanyInputs.tsx

@@ -23,7 +23,7 @@ import ImageEditorField from '../misc/ImageEditorField';
 const isUrl = (url: string) => {
     if (!url) return;
     const UrlRegex = new RegExp(
-        /^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/i
+        /^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([-.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/i
     );
     if (!UrlRegex.test(url)) {
         return 'Must be a valid URL';