Fix comments

Author: AntoxaAntoxic

src/main/java/org/prebid/server/auction/ExchangeService.java

@@ -314,7 +314,7 @@ private static ExtRequestTargeting targeting(BidRequest bidRequest) {
     }
 
     private static BidRequestCacheInfo bidRequestCacheInfo(BidRequest bidRequest, Account account) {
-        final Boolean cachingEnabled = Optional.ofNullable(account)
+        final boolean cachingEnabled = Optional.ofNullable(account)
                 .map(Account::getAuction)
                 .map(AccountAuctionConfig::getCache)
                 .map(AccountCacheConfig::getEnabled)

src/main/java/org/prebid/server/settings/model/AccountCacheConfig.java

@@ -1,10 +1,8 @@
 package org.prebid.server.settings.model;
 
-import lombok.Builder;
 import lombok.Value;
 
-@Builder(toBuilder = true)
-@Value
+@Value(staticConstructor = "of")
 public class AccountCacheConfig {
 
     Boolean enabled;

src/test/java/org/prebid/server/auction/ExchangeServiceTest.java

@@ -1664,7 +1664,7 @@ public void shouldCallBidResponseCreatorWithCachingDisabledWhenCachingIsNotEnabl
                         .id("accountId")
                         .auction(AccountAuctionConfig.builder()
                                 .events(AccountEventsConfig.of(true))
-                                .cache(AccountCacheConfig.builder().enabled(false).build())
+                                .cache(AccountCacheConfig.of(false))
                                 .build())
                         .build()));