Correct 'Text2dBundle' to 'Text2d' in example comment (#17425)

# Objective

Update out of date comment.

## Solution

## Testing

N/A

examples/2d/text2d.rs

@@ -1,6 +1,6 @@
 //! Shows text rendering with moving, rotating and scaling text.
 //!
-//! Note that this uses [`Text2dBundle`] to display text alongside your other entities in a 2D scene.
+//! Note that this uses [`Text2d`] to display text alongside your other entities in a 2D scene.
 //!
 //! For an example on how to render text as part of a user interface, independent from the world
 //! viewport, you may want to look at `games/contributors.rs` or `ui/text.rs`.