removed absurd amount of exclamation marks

content/posts/thinking-react.mdx

@@ -248,7 +248,7 @@ const ColorPicker = ({ width, height }) => {
 ### Color
 
 Whenever the user changes an input, we want our color value to update.
-This is easy with React Hooks!
+This is easy with React Hooks.
 
 The real magic happens in our call to useEffect: we've listed our input states
 as dependencies. Because we've lifted our state up to the same level
@@ -291,7 +291,7 @@ const Slider = ({ value, setValue, height }) => {
 ## The Slider Component
 
 At the start of this project Some of the alternative implementations we 
-looked into had code over *10,000* lines long to build a slider. Nuts to that!
+looked into had code over *10,000* lines long to build a slider. Nuts to that.
 
 We saved ourselves a lot of anguish by building our slider out of
 the basic HTML5 range slider. Our getters/setters are passed down from the component root,