message: docs(shared-data): Clarify some labware schema field descriptions
diff: }
  },
  "isTiprack": {
  - "description": "Flag marking whether a labware is a tiprack or not",
  + "description": "Flag marking whether this labware is a tip rack or not",
  "type": "boolean"
  },
  "tipLength": {
  - "description": "Required if labware is tiprack, specifies length of tip from drawing or as measured with calipers",
  + "description": "Required if this labware is a tip rack. Specifies the total length of one of this rack's tips, from top to bottom, as specified by technical drawings or as measured with calipers.",
  "$ref": "#/definitions/positiveNumber"
  },
  "tipOverlap": {
  - "description": "Required if labware is tiprack, specifies the length of the area of the tip that overlaps the nozzle of the pipette",
  + "description": "Required if this labware is a tip rack. Specifies how far one of this rack's tips is expected to overlap with the nozzle of a pipette. In other words: tipLength, minus the distance between the bottom of the pipette and the bottom of the tip. A robot's positional calibration may fine-tune this estimate.",
  "$ref": "#/definitions/positiveNumber"
  },
  "loadName": {
  ]
  },
  "properties": {
  - "depth": { "$ref": "#/definitions/positiveNumber" },
  + "depth": {
  + "description": "The distance between the top and bottom of this well. If the labware is a tip rack, this will be ignored in favor of tipLength, but the values should match.",
  + "$ref": "#/definitions/positiveNumber"
  + },
  "x": {
  "description": "x location of center-bottom of well in reference to left-front-bottom of labware",
  "$ref": "#/definitions/positiveNumber"
  