Fixed format docstrings are not parsed correctly

[erentar]

Docstrings in fixed format code should ignore the whitespace at the beginning which is reserved for comment, label, and line continuation markers.

To Reproduce

      SUBROUTINE MYFUNC(PARAM1)
      !> THIS IS AN EXAMPLE FUNCTION TO DEMONSTRATE
      !! THE BROKEN PARSING OF
      !! DOCSTRINGS FOR FIXED FORMAT CODE

      REAL, INTENT(IN) :: PARAM1
      !> THE SAME PROBLEM OCCURS
      !! FOR DOCSTRINGS FOR PARAMETERS

      END SUBROUTINE MYFUNC

the problem does not occur if I align the comment markers at the start

      SUBROUTINE MYFUNC(PARAM1)
      !> THIS IS AN EXAMPLE FUNCTION TO DEMONSTRATE
!!       THE BROKEN PARSING OF
!!       DOCSTRINGS FOR FIXED FORMAT CODE

      REAL, INTENT(IN) :: PARAM1
      !> THE SAME PROBLEM OCCURS
!!       FOR DOCSTRINGS FOR PARAMETERS

      END SUBROUTINE MYFUNC

Expected behavior
ignore the 6 spaces at the start

Setup information

• Python Version 3.14.6
• fortls Version 3.2.2
• VSCode
• Modern Fortran v4.0.0