Fix a typo in the changelog

Author: TolikPylypchuk

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [v5.1.0](https://github.com/TolikPylypchuk/SharpHook/releases/tag/v5.1.0) (October 8, 2023)
 
-- Mouse coordinates were fixed for event simulation on Windows with mutliple screens.
+- Mouse coordinates were fixed for event simulation on Windows with multiple screens.
 
 - Simulating multiple mouse clicks on macOS was fixed.
 

docs/articles/about.md

@@ -12,7 +12,7 @@ rest assured that it's not abandoned! I'm not giving up on this library any time
 
 ### [v5.1.0](https://github.com/TolikPylypchuk/SharpHook/releases/tag/v5.1.0) (October 8, 2023)
 
-- Mouse coordinates were fixed for event simulation on Windows with mutliple screens.
+- Mouse coordinates were fixed for event simulation on Windows with multiple screens.
 
 - Simulating multiple mouse clicks on macOS was fixed.