Update description in test/plot-schema.json as well.

Author: my-tien

test/plot-schema.json

@@ -1335,7 +1335,7 @@
       "valType": "any"
      },
      "tickangle": {
-      "description": "Sets the angle of the tick labels with respect to the horizontal. For example, a `tickangle` of -90 draws the tick labels vertically. If `tickangle` is auto, the angle will be chosen from autotickangles if provided. If `autotickangles` is not provided, the angle will be 30 or 90 degrees.",
+      "description": "Sets the angle of the tick labels with respect to the horizontal. For example, a `tickangle` of -90 draws the tick labels vertically.",
       "dflt": "auto",
       "editType": "colorbars",
       "valType": "angle"