False positive when comment ends with a function calls without arguments

In #2567055: Inline comment sniff is too permissive with ending punctuation the detection of comments that do not end with a period was tightened, but now a false positive is thrown when a comment ends with a function call without arguments.

Correctly detected:

  // See my_function($my_arg)

False positive:

  // See my_function()

The regex has a '+' where it should have a '*' :-/