doc: update example.

jaywcjlove · Jul 11, 2022 · ad2cb48 · ad2cb48
1 parent 3a7e109
commit ad2cb48
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -440,10 +440,10 @@ E.g: `G2868`, `D22`, `D9`, `Z5`, `Z24`, `Z17`
 ### 非负整数(正整数或零)
 
 ```regex
-\d+
+^\d+$
 ```
 
-🚧  E.g: `23`, `3.322`
+🚧  E.g: `23`, ~~`3.322`~~
 
 ### 数字