fix setFieldPrefix recursive call issue

mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/StrategyConfig.java

@@ -423,7 +423,7 @@ public class StrategyConfig {
     }
 
     public StrategyConfig setFieldPrefix(String... fieldPrefixs) {
-        setFieldPrefix(fieldPrefixs);
+        this.fieldPrefix = fieldPrefixs;
         return this;
     }