add link to md file code example
Example 1: how to create link in readme.md
[a link] (https://github.com/user/repo/blob/branch/other_file.md)
Example 2: code in markdown
```<name of the language>
<code>
```
EXAMPLE
```python
print("Hello World")
```
Example 3: add link in md
[link to google](https://www.google.com)