Fix ids

docs/index.rst

@@ -37,27 +37,27 @@ pygal is a SVG charting library written in python.
 
 It features various graph types:
 
-- `Bar charts </chart_types/#idbar-charts-histograms>`_
+- `Bar charts </chart_types/#bar-charts-histograms>`_
 
-- `Line charts </chart_types/#idline-charts>`_
+- `Line charts </chart_types/#line-charts>`_
 
-- `XY charts </chart_types/#idxy-charts>`_
+- `XY charts </chart_types/#xy-charts>`_
 
-- `Pie charts </chart_types/#idpies>`_
+- `Pie charts </chart_types/#pies>`_
 
-- `Radar charts </chart_types/#idradar-charts>`_
+- `Radar charts </chart_types/#radar-charts>`_
 
-- `Box plot </chart_types/#idbox-plot>`_
+- `Box plot </chart_types/#box-plot>`_
 
-- `Dot charts </chart_types/#iddot-charts>`_
+- `Dot charts </chart_types/#dot-charts>`_
 
-- `Pyramid charts </chart_types/#idpyramid-charts>`_
+- `Pyramid charts </chart_types/#pyramid-charts>`_
 
-- `Funnel charts </chart_types/#idfunnel-charts>`_
+- `Funnel charts </chart_types/#funnel-charts>`_
 
-- `Gauge charts </chart_types/#idgauge-charts>`_
+- `Gauge charts </chart_types/#gauge-charts>`_
 
-- `Worldmap charts </chart_types/#idworldmap-charts>`_
+- `Worldmap charts </chart_types/#worldmap-charts>`_
 
 - `Country charts </chart_types/#country-charts>`_