message: Update running.md
  Fixed typo `mainfest` -> `manifest`
diff: @@ -25,7 +25,7 @@ export const App = () => {
  ## Adding plugin
  -Go to `Menu > Plugins > Development > +` and select the `mainfest.json` file.
  +Go to `Menu > Plugins > Development > +` and select the `manifest.json` file.
  <img src="/img/add-plugin.png" align="center"
  alt="Add Plugin" width="303" height="195" />
  