docs: fix typo in landing page (#481)

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### Summary

Fix typo in landing page.

Author: szymonrybczak

docs/pages/index.md

@@ -3,4 +3,4 @@
 This project is a collection of tools to make it easier to build React Native libraries. It contains the following CLIs:
 
 - [`create-react-native-library`](./create.md) - a CLI to scaffold a React Native library.
-- [`react-native-bundle-bob`](./build.md) - a CLI to build React Native libraries for various targets.
+- [`react-native-builder-bob`](./build.md) - a CLI to build React Native libraries for various targets.