batch file upload format generation

[jo87jimmy]

Describe the bug
Issues with Swaggo's batch file upload format generation

To Reproduce
// @Param files formData []string false "Multi file" format(binary)
This will generate the following docs.go     

...  
"parameters": [
	{
		"type": "array",
		"format": "binary",
		"items": {
		"type": "string"
	},
		"description": "Multi file",
		"name": "files",
		"in": "formData"
	}
],
...

Expected behavior
However, if we move "format": "binary" into items, the output will be correct

"parameters": [
	{
		"type": "array",
		"items": {
		"type": "string",
		"format": "binary"
	},
		"description": "Multi file",
		"name": "files",
		"in": "formData"
	}
],

Your swag version
1.16.3

Your go version
1.20

Desktop (please complete the following information):

• OS: windows 11
• Browser:chrome
• Version: 131.0.6778.139

Additional context
So how do we put "format": "binary" into items?