Harmonize content.

Refactor content to a natural flow, remove duplications, extract partials.

See #1597

spring-data-r2dbc/src/test/java/org/springframework/data/r2dbc/documentation/QueryByExampleTests.java

@@ -55,12 +55,12 @@ public class QueryByExampleTests {
 
 		Example<Employee> example = Example.of(employee); // <2>
 
-		Flux<Employee> employees = repository.findAll(example); // <3>
+		repository.findAll(example); // <3>
 
-		// do whatever with the flux
+		// do whatever with the result
 		// end::example[]
 
-		employees //
+		repository.findAll(example) //
 				.as(StepVerifier::create) //
 				.expectNext(new Employee(1, "Frodo", "ring bearer")) //
 				.verifyComplete();
@@ -87,12 +87,12 @@ public class QueryByExampleTests {
 				.withIgnorePaths("role"); // <4>
 		Example<Employee> example = Example.of(employee, matcher); // <5>
 
-		Flux<Employee> employees = repository.findAll(example);
+		repository.findAll(example);
 
-		// do whatever with the flux
+		// do whatever with the result
 		// end::example-2[]
 
-		employees //
+		repository.findAll(example) //
 				.as(StepVerifier::create) //
 				.expectNext(new Employee(1, "Frodo Baggins", "ring bearer")) //
 				.expectNext(new Employee(1, "Bilbo Baggins", "burglar")) //