📚 Documentation: make correction in react tutorial

[divijshrivastava]

While following Build an ideas tracker with React tutorial, on step 7, src/App.jsx has the following code

line 4: import { IdeaProvider } from "./lib/context/ideas"; line 12: <IdeaProvider> line 15: </IdeaProvider>

which basically imports IdeaProvider from "./lib/context/ideas", but ideas.jsx does not export IdeaProvider, instead it exports Idea**s**Provider. Hence, this needs to be corrected.

[ernstmul]

Thanks for providing the PR. It's merged!