Fixed incorrect doc label

docs/user/playlist.rst

@@ -1,4 +1,4 @@
-.. _install:
+.. _playlist:
 
 Using Playlists
 ===============
@@ -43,4 +43,4 @@ Or, if we're only interested in the URLs for the videos, we can look at those as
     Python Tutorial for Beginners 2 - Numbers and Math in Python
     Python Tutorial for Beginners 3 - Variables and Inputs
 
-And that's basically all there is to it! The Playlist class is relatively straightforward.
+And that's basically all there is to it! The Playlist class is relatively straightforward.