Hello There,
Thanks for reaching out to us. I will try my best to address your concerns.
I totally understand your concern. Please be informed that in HTML5, some tags don't require any closing tag. Those are called void elements (hidden link).
Among them, The link tag is one of the void elements for which, the closing tag is not mandatory if you're using HTML 5. Link can be defined with and without the closing tags by including the "hreflang" as an attribute. Please don't worry if you're not seeing the closing tag. The modern browser and Google crawler can process the link tag in both formats correctly.
Without closing Tag: <link rel="alternate" hreflang="en" href="hidden link">
With closing Tag: <link rel="alternate" hreflang="en" href="hidden link" />
But, in some cases, we found that some users had issues in the Google Crawler due to not including the trailing slash at the end of the URL(example.com/). Since it is added already, hopefully, you'll not face any critical issues due to that.
But, let me know if you encounter any issues or need further clarification in this matter. I will be happy to help.
