[BUG] <!--Link--> error message is confusing when the file exists but the link name is missing

[lestephane]

Describe the bug

Example markdown:

<!---[Link](itests/src/test/scripts/jar-tests.sh)-->

(the file exists)

Documaid generate result:

[INFO] DocuMaid started
[ERROR] DocuMaid finished with 1 errors.
[ERROR] Found [Link] tag to not existing file '/home/lestephane/GitRepos/quantummaid-tutorials/aws-lambda/itests/src/test/scripts/jar-tests.sh)' (in path /home/lestephane/GitRepos/quantummaid-tutorials/aws-lambda/01_TheCaseForLambda.md)

Notice the closing parenthese in the reported file name. The user is supposed to add a name to the link.

<!---[Link](itests/src/test/scripts/jar-tests.sh "jar-tests.sh")-->

The error message should indicate that a name attribute is required, or use some reasonable default
(such as the basename as shown above). Either way would be fine for me. But the not existing file
error is quite confusing and must go.