github add link code example

Example 1: markdown table

Layout:
| Tables   |      Are      |  Cool |
|----------|:-------------:|------:|
| col 1 is |  left-aligned | $1600 |
| col 2 is |    centered   |   $12 |
| col 3 is | right-aligned |    $1 |
  
An amazing website for building a table in markdown:
https://www.tablesgenerator.com/markdown_tables

Example 2: code in markdown

```<name of the language>
<code>
```

EXAMPLE

```python
print("Hello World")
```