Update default and docs.

Author: bernardobelchior

docs/pages/x/api/charts/charts-x-axis.json

@@ -23,7 +23,7 @@
       "type": { "name": "union", "description": "'auto'<br>&#124;&nbsp;func" },
       "default": "'auto'"
     },
-    "tickLabelMinGap": { "type": { "name": "number" }, "default": "8" },
+    "tickLabelMinGap": { "type": { "name": "number" }, "default": "4" },
     "tickLabelPlacement": {
       "type": { "name": "enum", "description": "'middle'<br>&#124;&nbsp;'tick'" },
       "default": "'middle'"

packages/x-charts/src/ChartsXAxis/ChartsXAxis.tsx

@@ -350,7 +350,7 @@ ChartsXAxis.propTypes = {
   /**
    * The minimum gap in pixels between two tick labels.
    * If two tick labels are closer than this minimum gap, one of them will be hidden.
-   * @default 8
+   * @default 4
    */
   tickLabelMinGap: PropTypes.number,
   /**

packages/x-charts/src/models/axis.ts

@@ -143,7 +143,7 @@ export interface ChartsXAxisProps extends ChartsAxisProps {
   /**
    * The minimum gap in pixels between two tick labels.
    * If two tick labels are closer than this minimum gap, one of them will be hidden.
-   * @default 8
+   * @default 4
    */
   tickLabelMinGap?: number;
   /**