Refactor components section in 3-components.md

Updated the components section to improve formatting and clarity.

docs/tut/crash-course/3-components.md

@@ -1,4 +1,4 @@
-<img width="239" height="496" alt="image" src="https://github.com/user-attachments/assets/2d5de615-60bc-4e1b-997f-ec1cac69c8df" /># Components
+# Components
 
 Vide encourages separating different parts of your UI into functions called
 *components*.
@@ -32,9 +32,6 @@ local function Button(props: {
 end
 
 return Button
-```
-
-```luau [Menu.luau]
 local create = vide.create
 local source = vide.source
 local effect = vide.effect
@@ -115,8 +112,6 @@ local function Menu()
 end
 
 return Menu
-```
-```luau [slider.luau]
 -- Example of a component that wraps the built-in slider component.
 -- This keeps a consistent "component(props) -> Instance" style.
 
@@ -165,5 +160,3 @@ end
 
 return Slider
 :::
-
-A single parameter `props` is used to pass properties to the component.