Correct text bold formatting on license text

[bazzani]

The bold text formatting is not working as there are is no whitespace
line between the <img> tag and the line of text describing the
license under which this plugins is being released.

This commit adds a line of whitespace so that the bold text is
formatted correctly, and it also fixes a typo in one of the hyperlinks.

Context

I tried out your plugin today in my project and it is giving me something that I have been looking to use for a long time.

To show my gratitude, I have fixed a few problems in the main README.md file. I will spend some more time reading over the rest of the documentation to get to know how to use your awesome plugin in more advanced situations.

Contributor Checklist

• Added relevant integration or unit tests to verify the changes
• Update the Readme or any other documentation (including relevant Javadoc)
• Ensured that tests pass locally: mvn clean package
• Ensured that the code meets the current checkstyle coding style definition: mvn clean verify -Pcheckstyle -Dmaven.test.skip=true -B

[TheSnoozer]

Thank you :-)

If you got any questions, feel free to open an issue.