Update README_API_GUIDE.md

Author: AhlOct

README_API_GUIDE.md

@@ -63,7 +63,6 @@ Global Street Address Lookups
 
 ### Azure (`:azure`)
 
-* **API key**: required (set `Geocoder.configure(lookup: :azure, api_key: "your_api_key", limit: your_limit)`)
 * **Key signup**: https://azure.microsoft.com/en-us/products/azure-maps
 * **Quota**: 5,000 request/month with free API key, more with paid keys (see https://azure.microsoft.com/en-us/pricing/details/azure-maps)
 * **Region**: world
@@ -72,7 +71,7 @@ Global Street Address Lookups
 * **Documentation**: https://learn.microsoft.com/en-us/azure/azure-maps
 * **Terms of Service**: https://azure.microsoft.com/en-us/support/legal
 * **Limitations**: Azure Maps doesn't have any maximum daily limits on the number of requests that can be made, however there are limits to the maximum number of queries per second (QPS) (see https://learn.microsoft.com/en-us/azure/azure-maps/azure-maps-qps-rate-limits)
-* **Notes**: To use Azure, set `Geocoder.configure(lookup: :azure, api_key: "your_api_key", limit: your_limit)` :limit - restrict the maximum amount of returned results, e.g. limit: 10.
+* **Notes**: To use Azure, set `Geocoder.configure(lookup: :azure, api_key: "your_api_key", azure: { limit: your_limit })` limit is optional - limit the maximum number of results returned, default 10.
 
 ### Bing (`:bing`)