Correction of errors encounted when importing components

[KaveeshaPiumini]

Correcting errors occurred when importing few selected Components in src/components

The markdown files of these components did not import the component correctly. There were syntax errors, typo errors, runtime errors.
MiniDrawer directory had a typo mistake which then lead to a runtime error

This change is required because the markdown file is provided as a user documentation to import components. There should not be mistakes in them.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests have passed and it does not give any unexpected error for the same.