doc: clean unnecessary doc config

Signed-off-by: HaoboGu <[email protected]>

docs/book.toml

@@ -18,11 +18,7 @@ preferred-dark-theme = "ayu"
 curly-quotes = false
 mathjax-support = false
 copy-fonts = true
-# additional-css = ["custom.css", "custom2.css"]
-# additional-js = ["custom.js"]
 no-section-label = true
 git-repository-url = "https://github.com/HaoboGu/rmk"
 git-repository-icon = "fa-github"
-edit-url-template = "https://github.com/HaoboGu/rmk/docs/{path}"
-# site-url = "/example-book/" # TODO: deploy!
-# input-404 = "404.md"
+edit-url-template = "https://github.com/HaoboGu/rmk/docs/{path}"