What does the ending of Death Note (manga) mean?
Yes. It is indeed meant to invoke that.

Throughout the series we see Light fall more and more into a trap where he kills to protect himself, instead of just "punishing" criminals. His ultimate aim was to usher in a new era where crime was non existent and himself to be the saviour (read God) for the people still living.

Though he died, in the end he did affect multitude of people with his reign as that of Kira and eventually a cult (religion is too strong a word at this point) of his worshippers formed who worship him and probably undertake a spiritual journey for their saviour. 

This is what the wiki describes as the scene you described,


  In a place with high mountains, thousands of hooded people of all ages walking by candlelight. The group parts and a hooded woman dressed in white walks to the edge of a mountain and clasps her hands in prayer. She says, "Kira, our saviour." Source - Wiki


This is typical for a spiritual group. Think Teerth Yatras for Hindus or Hajj for Muslims. I am expecting this to be inspiration for the scene. 

On a side note, unnamed Kira worshiper was drawn with her face shown because Obata "personally wanted to draw something pretty in the final chapter"