corrected case

incorrect capital C there

Author: Bappy1988

src/qt-ui/qt-updater.cpp

@@ -246,7 +246,7 @@ namespace appimage {
                                 if (validationResult == d->updater->VALIDATION_NOT_SIGNED) {
                                     // copy permissions of the old AppImage to the new version
                                     d->updater->copyPermissionsToNewFile();
-                                    d->label->setText("Update Completed with warning: " + validationMessage);
+                                    d->label->setText("Update completed with warning: " + validationMessage);
                                     palette.setColor(QPalette::Highlight, Qt::gray);
                                     palette.setColor(QPalette::HighlightedText, Qt::black);
                                 } else {