Maven plugin does not work with windows path

[dibog]

Describe the bug
If the configuration in the maven plugin contains the following fragment

                <sourceLinks>
                    <link>
                        <path>${project.basedir}</path>
                        <url>https://URL_TO_YOUR_SOURCECODE</url>
                        <lineSuffix>#L</lineSuffix>
                    </link>
                </sourceLinks>

the plugin fails with: Incorrect path property, only Unix based path allowed.

Expected behaviour
Running on windows it should just be able to work with windows paths.

To Reproduce
Use your example maven project and build it on windows.

Dokka configuration
see above

Installation

• Operating system: Windows
• Build tool: Maven
• Dokka version: 1.4.10

[freya022]

I've made a PR #3046 which should at least allow you to use relative paths for your Maven projects, since absolute paths on Windows would not work