Update common-styles.md (#420)

Update common-styles.md 
diff --git a/docs/zh/docs/styles/common-styles.md b/docs/zh/docs/styles/common-styles.md
index edbcf0d..b4a9caa 100644
--- a/docs/zh/docs/styles/common-styles.md
+++ b/docs/zh/docs/styles/common-styles.md
@@ -75,7 +75,7 @@
 
 #### border-width
 `border-width`:设定边框宽度,非负值, 默认值 0,如果四个方向的边框宽度不同,可分别设置:
-  * `border-left-width {length}`:非负值, 默认值 0
+  * `border-width {length}`:非负值, 默认值 0
   * `border-left-width {length}`:非负值, 默认值 0
   * `border-top-width {length}`:非负值, 默认值 0
   * `border-right-width {length}`:非负值, 默认值 0