Fix typo in vline

Radomir Dopieralski · Radomir Dopieralski · commit fd1a2e9b08df · 2016-10-18T23:01:05.000+02:00
diff --git a/docs/display.rst b/docs/display.rst
@@ -44,6 +44,6 @@ This is the interface that all the display classes share.
 
         Draw a horizontal line.
 
-    .. method:: hline(x, y, width, color)
+    .. method:: vline(x, y, width, color)
 
         Draw a vertical line.
