diff --git a/pyqtgraph/parametertree/parameterTypes.py b/pyqtgraph/parametertree/parameterTypes.py
index f58145dd..92eca90f 100644
--- a/pyqtgraph/parametertree/parameterTypes.py
+++ b/pyqtgraph/parametertree/parameterTypes.py
@@ -18,16 +18,16 @@ class WidgetParameterItem(ParameterItem):
     * simple widget for editing value (displayed instead of label when item is selected)
     * button that resets value to default
     
-    ================= =============================================================
-    Registered Types:
-    int               Displays a :class:`SpinBox <pyqtgraph.SpinBox>` in integer
-                      mode.
-    float             Displays a :class:`SpinBox <pyqtgraph.SpinBox>`.
-    bool              Displays a QCheckBox
-    str               Displays a QLineEdit
-    color             Displays a :class:`ColorButton <pyqtgraph.ColorButton>`
-    colormap          Displays a :class:`GradientWidget <pyqtgraph.GradientWidget>`
-    ================= =============================================================
+    ==========================  =============================================================
+    **Registered Types:**
+    int                         Displays a :class:`SpinBox <pyqtgraph.SpinBox>` in integer
+                                mode.
+    float                       Displays a :class:`SpinBox <pyqtgraph.SpinBox>`.
+    bool                        Displays a QCheckBox
+    str                         Displays a QLineEdit
+    color                       Displays a :class:`ColorButton <pyqtgraph.ColorButton>`
+    colormap                    Displays a :class:`GradientWidget <pyqtgraph.GradientWidget>`
+    ==========================  =============================================================
     
     This class can be subclassed by overriding makeWidget() to provide a custom widget.
     """