fix: added tinymce license_key

adapters/secondary/gateways/web/templates/postEdit.html

@@ -47,6 +47,7 @@
                 console.log("LOADED")
             });
         },
+        license_key: 'gpl',
         images_upload_handler: (blobInfo, progress) => new Promise((resolve, reject) => {
             // const xhr = new XMLHttpRequest();
             // xhr.withCredentials = false;