replace ArcGIS with Esri in asset URLs

Author: sorenoid

toolkit/indoors/README.md

@@ -6,7 +6,7 @@ in the building.
 
 |FloorFilter|
 |:--:|
-|![image](https://github.com/ArcGIS/arcgis-maps-sdk-kotlin-toolkit/assets/5582469/50cceda2-9b57-4596-b5eb-7c970e9aeeba)|
+|![image](https://github.com/Esri/arcgis-maps-sdk-kotlin-toolkit/assets/5582469/50cceda2-9b57-4596-b5eb-7c970e9aeeba)|
 
 ##  Workflow