Update import statement for Icon from 'astro-icon'

[edamame8888]

I've noticed that the following import statement:

import Icon from 'astro-icon';

Is used in the following files:

• src/components/widgets/Content.astro#L2
• src/components/blog/ListItem.astro#L2
• src/components/blog/SinglePost.astro#L2

I suggest changing the import statement to:

- import Icon from 'astro-icon';
+ import { Icon } from 'astro-icon';

I have confirmed in my local environment that it works fine after the change!
If my approach is incorrect, please let me know.