Update schema

Author: camdecoster

test/plot-schema.json

@@ -3445,7 +3445,7 @@
      "valType": "number"
     },
     "maxheight": {
-     "description": "Sets the max height (in px) of the legend, or max height ratio (reference height * ratio) if less than one. Default value is: 0.5 for horizontal legends; 1 for vertical legends. The minimum allowed height is 30px. For a ratio of 0.5, the legend will take up to 50% of the reference height before displaying a scrollbar. The reference height is the full layout height except for vertically oriented legends with a `yref` of `\"paper\"`, where the reference height is the plot height.",
+     "description": "Sets the max height (in px) of the legend, or max height ratio (reference height * ratio) if less than one. Default value is: 0.5 for horizontal legends; 1 for vertical legends. The minimum allowed height is 30px. For a ratio of 0.5, the legend will take up to 50% of the reference height before displaying a scrollbar. The reference height is the full layout height with the following exception: vertically oriented legends with a `yref` of `\"paper\"`, unless the legend is located above/below the plot. In this case, the reference height is the plot height.",
      "editType": "legend",
      "min": 0,
      "valType": "number"
@@ -3646,7 +3646,7 @@
      "valType": "number"
     },
     "yanchor": {
-     "description": "Sets the legend's vertical position anchor This anchor binds the `y` position to the *top*, *middle* or *bottom* of the legend. Value *auto* anchors legends at their bottom for `y` values less than or equal to 1/3, anchors legends to at their top for `y` values greater than or equal to 2/3 and anchors legends with respect to their middle otherwise.",
+     "description": "Sets the legend's vertical position anchor. This anchor binds the `y` position to the *top*, *middle* or *bottom* of the legend. Value *auto* anchors legends at their bottom for `y` values less than or equal to 1/3, anchors legends to at their top for `y` values greater than or equal to 2/3 and anchors legends with respect to their middle otherwise.",
      "editType": "legend",
      "valType": "enumerated",
      "values": [