Fix typing for FloatPrompt (#3151)

Co-authored-by: Darren Burns <[email protected]>

Author: xymy

Diff for: CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Ensure font is correctly inherited in exported HTML https://github.com/Textualize/rich/issues/3104
+- Fixed typing for `FloatPrompt`.
 
 ## [13.6.0] - 2023-09-30
 

Diff for: rich/prompt.py

@@ -307,7 +307,7 @@ class IntPrompt(PromptBase[int]):
     validate_error_message = "[prompt.invalid]Please enter a valid integer number"
 
 
-class FloatPrompt(PromptBase[int]):
+class FloatPrompt(PromptBase[float]):
     """A prompt that returns a float.
 
     Example: