revert thumbnail filenames to mapbox (will update at a later time)

Author: emilykl

doc/python/density-heatmaps.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: u-guide
     permalink: python/density-heatmaps/
     redirect_from: python/mapbox-density-heatmaps/
-    thumbnail: thumbnail/map-density.png
+    thumbnail: thumbnail/mapbox-density.png
 ---
 
 ### Density map with `plotly.express`

doc/python/hexbin-map.md

@@ -30,7 +30,7 @@ jupyter:
     order: 13
     page_type: u-guide
     permalink: python/hexbin-map/
-    thumbnail: thumbnail/hexbin_map.jpg
+    thumbnail: thumbnail/hexbin_mapbox.jpg
 ---
 
 #### Simple Count Hexbin

doc/python/lines-on-tile-maps.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: example_index
     permalink: python/lines-on-tile-maps/
     redirect_from: python/lines-on-mapbox/
-    thumbnail: thumbnail/line_map.jpg
+    thumbnail: thumbnail/line_mapbox.jpg
 ---
 
 ### Lines on tile maps using Plotly Express

doc/python/migrate-to-maplibre.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: u-guide
     permalink: python/mapbox-to-maplibre/
     redirect_from: python/maplibre-migration/
-    thumbnail: thumbnail/map-layers.png
+    thumbnail: thumbnail/mapbox-layers.png
 ---
 
 ## Migrating from Mapbox traces to MapLibre traces

doc/python/tile-county-choropleth.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: example_index
     permalink: python/tile-county-choropleth/
     redirect_from: python/mapbox-county-choropleth/
-    thumbnail: thumbnail/map-choropleth.png
+    thumbnail: thumbnail/mapbox-choropleth.png
 ---
 
 A [Choropleth Map](https://en.wikipedia.org/wiki/Choropleth_map) is a map composed of colored polygons. It is used to represent spatial variations of a quantity. This page documents how to build **tile-map** choropleth maps, but you can also build [**outline** choropleth maps](/python/choropleth-maps).

doc/python/tile-map-layers.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: u-guide
     permalink: python/tile-map-layers/
     redirect_from: python/mapbox-layers/
-    thumbnail: thumbnail/map-layers.png
+    thumbnail: thumbnail/mapbox-layers.png
 ---
 
 <!-- #region -->

doc/python/tile-scatter-maps.md

@@ -31,7 +31,7 @@ jupyter:
     page_type: u-guide
     permalink: python/tile-scatter-maps/
     redirect_from: python/scattermapbox/
-    thumbnail: thumbnail/scatter-map.jpg
+    thumbnail: thumbnail/scatter-mapbox.jpg
 ---
 
 ### Basic example with Plotly Express