fix(specs): nb_api_calls in getLogs response is optional (generated)

algolia/api-clients-automation#4142

Co-authored-by: algolia-bot <accounts+algolia-api-client-bot@algolia.com>
Co-authored-by: Clément Vannicatte <vannicattec@gmail.com>

Author: algolia-bot

algoliasearch/src/main/java/com/algolia/model/search/Log.java

@@ -163,7 +163,7 @@ public Log setNbApiCalls(String nbApiCalls) {
   }
 
   /** Number of API requests. */
-  @javax.annotation.Nonnull
+  @javax.annotation.Nullable
   public String getNbApiCalls() {
     return nbApiCalls;
   }