✏️ Trivial: Made internal builderImpl instance final in Builder

It was already effectively final, so just made it explicit.

Author: rmcdouga

rest-services/client/src/main/java/com/_4point/aem/docservices/rest_services/client/forms/RestServicesFormsServiceAdapter.java

@@ -153,7 +153,7 @@ public static FormsServiceBuilder builder(TriFunction<AemConfig, String, Supplie
 	}
 
 	public static class FormsServiceBuilder implements Builder {
-		private BuilderImpl builder;
+		private final BuilderImpl builder;
 
 		private FormsServiceBuilder(TriFunction<AemConfig, String, Supplier<String>, RestClient> clientFactory) {
             this.builder = new BuilderImpl(clientFactory);

rest-services/client/src/main/java/com/_4point/aem/docservices/rest_services/client/generatePDF/RestServicesGeneratePDFServiceAdapter.java

@@ -119,7 +119,7 @@ public static GeneratePDFServiceBuilder builder(TriFunction<AemConfig, String, S
 	}
 
 	public static class GeneratePDFServiceBuilder implements Builder {
-		private BuilderImpl builder;
+		private final BuilderImpl builder;
 
 		public GeneratePDFServiceBuilder(TriFunction<AemConfig, String, Supplier<String>, RestClient> clientFactory) {
 			this.builder = new BuilderImpl(clientFactory);