Merge branch 'fix_polygon' into 'master'

fix content

See merge request BA/amap-shapes-generator!29

index.ts

@@ -1343,7 +1343,7 @@ export function polygonContent(airspaceInfo: AirspaceInfoPolygon, type=3): strin
         let cc = content.join('、') + `${length}点连线范围内`
         cc += `，${getHeight(airspaceInfo.height, airspaceInfo.heightStandard, type)}`
         if (airspaceInfo.note)
-            cc = `${content}，备注：${airspaceInfo.note}`
+            cc += `，备注：${airspaceInfo.note}`
         return cc;
     }
 }