Update Explain.md

CY-Gu · web-flow · commit 215c6cfca3bf · 2020-05-01T17:13:38.000+08:00
diff --git a/160. Intersection of Two Linked Lists/Explain.md b/160. Intersection of Two Linked Lists/Explain.md
@@ -4,7 +4,7 @@
 流程如下: 
 
 ```=
-headA : 4 1 8 4 5 null    5   0 1 8 4 5
+headA : 4 1 8 4 5  null   5   0 1 8 4 5
         | | | | |   |     |   | | | | |
         | | | | |   |     |   | | | | |
 headB : 5 0 1 8 4   5   null  4 1 8 4 5
