docs: add documentations

exampleSite/content/docs/guide/latex.md

@@ -0,0 +1,44 @@
+---
+title: "LaTeX"
+weight: 4
+math: true
+---
+
+$\KaTeX$ is used for rendering LaTeX math expressions. It can be enabled per page by setting `math` to `true` in the page front matter.
+
+```yaml {filename="Markdown"}
+---
+title: "My Page with LaTeX"
+math: true
+---
+
+```
+
+When enabled, the scripts, stylesheets and fonts from KaTeX will be included automatically in your site. You can start using LaTeX math expressions in your Markdown content.
+
+## Example
+
+Both inline and separate paragraph LaTeX math expressions are supported in the Markdown content.
+
+### Inline
+
+```markdown {filename="page.md"}
+This $\sigma(z) = \frac{1}{1 + e^{-z}}$ is inline.
+```
+
+This $\sigma(z) = \frac{1}{1 + e^{-z}}$ is inline.
+
+### Separate Paragraph
+
+```markdown {filename="page.md"}
+$$F(\omega) = \int_{-\infty}^{\infty} f(t) e^{-j\omega t} \, dt$$
+```
+
+will be rendered as:
+
+$$F(\omega) = \int_{-\infty}^{\infty} f(t) e^{-j\omega t} \, dt$$
+
+
+## Supported Functions
+
+For a list of supported functions, see [KaTeX supported functions](https://katex.org/docs/supported.html).