Bot crashes while saving the notes if no markdown syntax links are provided

**Describe the bug**
When ` /save <Title> <Content> ` is used if the content doesnt have any link in markdown format i.e ` [link title](link) ` the bot crashes due to ` index out of range `

**Expected behavior**

The bot should avoid parsing markdown links if the matches are zero

**Additional context**

Logs : https://del.dog/asadingapp
