Why is this an issue?

Trailing comments should not be used. Comments are far better placed on the previous empty line of code, where they will be more visible and readable.

How to fix it

Code examples

Noncompliant code example

module fly; // This very long comment is better placed before the line of code.
endmodule

Compliant solution

// This very long comment is more visible and readable on its own line.
module fly;
endmodule