Fix tests with generation changes and docs update

Author: RedCuckoo

README.md

@@ -466,7 +466,7 @@ from ankr.types import Blockchain, GetNFTMetadataRequest
 
 ankr_w3 = AnkrWeb3("YOUR-TOKEN")
 
-metadata, attributes = AnkrAdvancedAPI.get_nft_metadata(
+reply = AnkrAdvancedAPI.get_nft_metadata(
     request=GetNFTMetadataRequest(
         blockchain=Blockchain.Eth,
         contractAddress='0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d',
@@ -475,8 +475,8 @@ metadata, attributes = AnkrAdvancedAPI.get_nft_metadata(
     )
 )
 
-print(metadata)
-print(attributes)
+print(reply.metadata)
+print(reply.attributes)
 ```
 
 #### `get_nft_holders` / `get_nft_holders_raw`

ankr/advanced_apis.py

@@ -131,7 +131,7 @@ def get_logs(
         self,
         request: types.GetLogsRequest,
         limit: Optional[int] = None,
-    ) -> Iterable[types.GetLogsReply]:
+    ) -> Iterable[types.Log]:
         for log in self.provider.call_method_paginated(
             rpc="ankr_getLogs",
             request=request,
@@ -419,7 +419,7 @@ def get_token_holders_count_history_raw(
     def get_token_holders_count(
         self,
         request: types.GetTokenHoldersCountRequest,
-    ) -> Iterable[types.DailyHolderCount]:
+    ) -> types.DailyHolderCount:
         request.pageSize = 1
         reply = self.provider.call_method(
             rpc="ankr_getTokenHoldersCount",
@@ -509,13 +509,13 @@ def get_nfts_raw(
 
     def get_nft_metadata(
         self, request: types.GetNFTMetadataRequest
-    ) -> [types.NftMetadata, types.NftAttributes]:
+    ) -> types.GetNFTMetadataReply:
         reply = self.provider.call_method(
             rpc="ankr_getNFTMetadata",
             request=request,
             reply=types.GetNFTMetadataReply,
         )
-        return reply.metadata, reply.attributes
+        return reply
 
     def get_nft_metadata_raw(
         self, request: types.GetNFTMetadataRequest