Update documentation header in Geojson layer file

Corrected the header comment to accurately describe the Geojson layer instead of incorrectly referencing the Arc layer. Ensures the documentation aligns with the file's purpose.

lib/components/deck-layers/geojson.layer.ts

@@ -10,7 +10,7 @@ import {
 } from "@/lib/lib/deck.layer.lib";
 
 /**
- * Deck.gl Arc Layer
+ * Deck.gl Geojson Layer
  *
  * See the [https://deck.gl/docs/api-reference/layers/geojson-layer]
  */