feat(posts): add sample markdown content for testing rendering

content/posts/inner-section/md-blog.md

@@ -0,0 +1,36 @@
+---
+title: "Sample Markdown Blog Post"
+date: 2024-06-01T12:00:00Z
+---
+
+## Sample Markdown Blog Post
+
+A sample blog post to test markdown rendering in PaperMod. This post includes various markdown elements such as headings, images, and code blocks. The content is meant to verify that all markdown features are displayed correctly in the theme.
+
+### Sample Heading
+
+Knock knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's cold out here!
+
+![Sample Image](https://placehold.co/800x200)
+
+```javascript
+function greet(name) {
+    return `Hello, ${name}!`;
+}
+console.log(greet('World'));
+```
+
+```python {hl_lines="2",linenos="table"}
+def greet(name):
+    return f"Hello, {name}!"
+
+print(greet("World"))
+```
+
+#### Another Heading
+
+| This is a table | With some data |
+|-----------------|----------------|
+| Row 1           | Data 1         |
+| Row 2           | Data 2         |
+