fix: missing colon in event name for dynamic model arguments

[KaelWD]

🤔 What is the nature of this change?

• New feature
• Fix bug
• Style optimization
• Code style optimization
• Performance optimization
• Build optimization
• Refactor code or style
• Test related
• Other

🔗 Related Issue

fixes #602
fixes #679

💡 Background or solution

https://vue-jsx-explorer.netlify.app/#const%20v%20%3D%20(%3C%3E%0A%20%20%3CMyComp%20v-model%3Atitle%3D%7B%20title.value%20%7D%3E%3C%2FMyComp%3E%0A%20%20%3CMyComp%20v-model%3D%7B%20%5Btitle.value%2C%20'title'%5D%7D%3E%3C%2FMyComp%3E%0A%20%20%3CMyComp%20v-model%3D%7B%20%5Btitle.value%2C%20key%5D%7D%3E%3C%2FMyComp%3E%0A%3C%2F%3E)%0A

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

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[luocong2016]

@KaelWD @cexbrayat @Jinjiang @kazupon @FloEdelmann

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