docs: add documentations

exampleSite/content/docs/guide/components/steps.md

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+---
+title: Steps
+---
+
+A built-in component to display a series of steps.
+
+## Example
+
+{{% steps %}}
+
+### Step 1
+
+This is the first step.
+
+### Step 2
+
+This is the second step.
+
+### Step 3
+
+This is the third step.
+
+{{% /steps %}}
+
+
+## Usage
+
+Put Markdown h3 header within `steps` shortcode.
+
+```
+{{%/* steps */%}}
+### Step 1
+
+This is the first step.
+
+### Step 2
+
+This is the second step.
+{{%/* /steps */%}}
+```