Fixed bug when changing folders and going back

src/panels/readme/readmepanel.cpp

@@ -53,11 +53,11 @@ void ReadmePanel::hideEvent(QHideEvent* event) {
 
 bool ReadmePanel::urlChanged()
 {
-    m_readmeUrl = QUrl(url().toString().append("/README.md"));
+    m_readmeUrl.setUrl((url().toString().append("/README.md")));
     QFileInfo check_file(m_readmeUrl.path());
     if (!m_readmeUrl.isValid() || !check_file.exists()) {
         this->parentWidget()->hide();
-        return false;
+        return true;
     }
     this->parentWidget()->show();
     m_markdownPart->openUrl(m_readmeUrl);