Support Special characters in tags (& . etc)

Please kindly consider my suggestion and optimize the product design:

Allow the use of “.” in tags, such as centos7.9.

This kind of tag is a common operation in the blog I built using hexo before(see figure below), but it cannot be used normally in Obsidian. I think this is a defect in product design, and I hope you can adopt my suggestions and solve this problem, and together make Obsidian better!