message: docs: replace mergeWith with extendTheme in example
diff: @@ -38,7 +38,7 @@ For example, to create a simple badge that changes its background based on color
  mode. Here's how to go about it.
  ```jsx live=false
  -import { extendTheme, theme } from "@chakra-ui/react"
  +import { extendTheme } from "@chakra-ui/react"
  // 1. define component configuration
  const components = {
  @@ -56,8 +56,8 @@ const components = {
  },
  }
  -// 2. add it to the theme and mount on `ChakraProvider`
  -const customTheme = mergeWith(theme, { components })
  +// 2. Call `extendTheme` and pass your custom values`
  +const theme = extendTheme({ components })
  // 3. Use it in your components
  function CustomBadge(props) {
  