feat: greet function without return (#48)

Author: zhangdeyu

docs/definition-and-invocation-of-functions.md

@@ -17,20 +17,22 @@ function greet(name, age, gender='Secret') {
   console.log(`Hello, I am ${name}, ${age} years old, ${gender}`)
 }
 
-console.log(greet('Bob', 18));
-console.log(greet('Tom', 18, 'male'));
-console.log(greet(...['Amy', 18, 'female']));
+greet('Bob', 18);
+greet('Tom', 18, 'male');
+greet(...['Amy', 18, 'female']);
 ```
 
 #### Python implementation
 ```python
 def greet(name, age, gender='Secret'):
     print(f"Hello, I am {name}, {age} years old, {gender}")
 
-print(greet('Bob', 18)) # Positional arguments
-print(greet(age=18,name='Bob')) # Keyword arguments
-print(greet('Tom', 18, 'male')) 
-print(greet(*['Amy', 18, 'female'])) 
+
+greet('Bob', 18)  # Positional arguments
+greet(age=18, name='Bob')  # Keyword arguments
+greet('Tom', 18, 'male')
+greet(*['Amy', 18, 'female'])
+
 ```
 
 ### Code Highlight

i18n/zh-cn/docusaurus-plugin-content-docs/current/definition-and-invocation-of-functions.md

@@ -17,20 +17,22 @@ function greet(name, age, gender='保密') {
   console.log(`你好，我是${name}，今年${age}岁，性别${gender}`)
 }
 
-console.log(greet('张三', 18));
-console.log(greet('李四', 18, '男'));
-console.log(greet(...['王五', 18, '女']));
+greet('张三', 18);
+greet('李四', 18, '男');
+greet(...['王五', 18, '女']);
 ```
 
 #### Python 实现
 ```python
 def greet(name, age, gender='保密'):
     print(f"你好，我是{name}，今年{age}岁，性别{gender}")
 
-print(greet('张三', 18)) # 传入位置参数
-print(greet(age=18,name='张三')) # 传入关键字参数
-print(greet('李四', 18, '男')) 
-print(greet(*['王五', 18, '女'])) 
+
+greet('张三', 18)  # 传入位置参数
+greet(age=18, name='张三')  # 传入关键字参数
+greet('李四', 18, '男')
+greet(*['王五', 18, '女'])
+
 ```
 
 ### 代码解读