fix: 修复主题相关的错误拼写 (antvis#3358)

Author: visiky

src/theme/style-sheet/dark.ts

@@ -176,7 +176,7 @@ export const createDarkStyleSheet = (cfg: StyleSheetCfg = {}) => {
     legendItemSpacing: 24,
     /** 图例项垂直方向的间隔 */
     legendItemMarginBottom: 12,
-    /** 图例与图表绘图区域的便宜距离  */
+    /** 图例与图表绘图区域的偏移距离  */
     legendSpacing: 16,
     /** 图例与图表绘图区域的偏移距离  */
     legendPadding: [8, 8, 8, 8],

src/theme/util/create-by-style-sheet.ts

@@ -1101,7 +1101,7 @@ export function createThemeByStyleSheet(styleSheet: StyleSheet): LooseObject {
           stroke: '#fff',
           shadowBlur: 10,
           shadowOffsetX: 0,
-          shadowOffSetY: 0,
+          shadowOffsetY: 0,
           shadowColor: 'rgba(0,0,0,0.09)',
           lineWidth: 2,
           r: 4,