Fix broken link on Elbrus Fortran compiler

Error is raised due to Elbrus Fortran compiler can't
generate debug information for now, because it's a 2-step
compiler where 1st step is code conversion from Fortran to C,
so debug information which C compiler would produce, is useless.

run_unittests.py

@@ -3087,6 +3087,8 @@ int main(int argc, char **argv) {
             pass
         try:
             env.detect_fortran_compiler(MachineChoice.HOST)
+            if is_windows() or platform.machine().lower() != 'e2k':
+                # Elbrus Fortran compiler can't generate debug information
                 langs.append('fortran')
         except EnvironmentException:
             pass