update the markdown

Author: officialrajdeepsingh

examples/demo-section-blog/src/pages/posts/makdown.mdx

@@ -81,43 +81,43 @@ Superscript: X<sub>2</sub>Subscript: O<sup>2</sup>
 3. Item C
 
 
-### Tables
+## Tables
 
-First table
+### First table
 
 First Header  | Second Header
 ------------- | -------------
 Content Cell  | Content Cell
 Content Cell  | Content Cell 
 
 
-Second table
+### Second table
 
 
 | Function name | Description                    |
-| ------------- | ------------------------------ |
+| :-----------: | :--------------------------: |
 | `help()`      | Display the help window.       |
 | `destroy()`   | **Destroy your computer!**     |
 
 
-Third table
+### Third table
 
 
 | Item      | Value |
-| --------- | -----:|
+| :---------: | :-----:|
 | Computer  | $1600 |
 | Phone     |   $12 |
 | Pipe      |    $1 |
 
 
-Four table
+### Four table
 
 
-| Left-Aligned  | Center Aligned  | Right Aligned |
-| :------------ |:---------------:| -----:|
-| col 3 is      | some wordy text | $1600 |
-| col 2 is      | centered        |   $12 |
-| zebra stripes | are neat        |    $1 |
+| Left-Aligned  | Center Aligned  | Center Center |
+| :------------ |:---------------:| :-----:|
+| Col 3 is      | Some wordy text | $1600 |
+| Col 2 is      | Centered        |   $12 |
+| Zebra stripes | are neat        |    $1 |