fix generate web-types.json bug (#5674)

set the wrong default value by parse md table error.

antd-tools/generator-types/src/parser.ts

@@ -25,7 +25,7 @@ function readLine(input: string) {
 }
 
 function splitTableLine(line: string) {
-  line = line.replace('\\|', 'JOIN');
+  line = line.replace(/\\\|/g, 'JOIN');
 
   const items = line.split('|').map(item => item.trim().replace('JOIN', '|'));