fix: fix example of chinese

examples/basic/chinese.go

@@ -1,50 +0,0 @@
-package main
-
-import (
-	"log"
-	"os"
-
-	charts "github.com/vicanso/go-charts"
-)
-
-func echartsRender() ([]byte, error) {
-	return charts.RenderEChartsToPNG(`{
-		"title": {
-			"text": "用户访问次数",
-			"textStyle": {
-				"fontFamily": "chinese"
-			}
-		},
-		"xAxis": {
-			"data": ["周一", "周二", "周三", "周四", "周五", "周六", "周日"]
-		},
-		"series": [
-			{
-				"data": [150, 230, 224, 218, 135, 147, 260],
-				"label": {
-					"show": true
-				}
-			}
-		]
-	}`)
-}
-
-func main() {
-	fontData, err := os.ReadFile("/Users/darcy/Downloads/NotoSansCJKsc-VF.ttf")
-	if err != nil {
-		log.Fatalln("Error when reading font file:", err)
-	}
-
-	if err := charts.InstallFont("chinese", fontData); err != nil {
-		log.Fatalln("Error when instaling font:", err)
-	}
-
-	fileData, err := echartsRender()
-
-	if err != nil {
-		log.Fatalln("Error when rendering image:", err)
-	}
-	if err := os.WriteFile("chinese.png", fileData, 0644); err != nil {
-		log.Fatalln("Error when save image to chinese.png:", err)
-	}
-}