fix typo

docs/src/pages/getting-started/Tutorial/section3.md

@@ -7,7 +7,7 @@ Let's add a track...
 ## Tracks
 
 A slider always has handles + 1 possible tracks.
-The `tracks` component sends you an array of source/target values for each possible track.
+The `Tracks` component sends you an array of source/target values for each possible track.
 The first source will always be value equal to the min and the percentage zero.
 The last target will always be value equal to the max and the percentage 100.
 You can use the `left` and `right` props to eliminate the outer tracks as a convenience, but the tracks are just an array that you can manipulate however you want.