fix(lambda): 🐛 general translation

Refers: #6

book/04-lambda/sections/01-functional-interfaces.asc

@@ -59,7 +59,7 @@ include::{section-java-package}/functionalinterfaces/FunctionalInterfaces_Extend
 include::{section-java-package}/functionalinterfaces/FunctionalInterfaces_ExtendsNewMethod.java[tag=code]
 ----
 
-. Utilizar a anotação `@FunctionalInterface` em interfaces que possuem mais de um método abstrato causa um erro de compilação.
+. Using the `@FunctionalInterface` annotation on interfaces that have more than one abstract method causes a compilation error.
 +
 [source,java,indent=0]
 .{java-package}/functionalinterfaces/FunctionalInterfaces_InterfaceCompilationError.java

book/04-lambda/sections/03-built-in-interfaces.asc

@@ -186,7 +186,7 @@ public interface BiFunction<T, U, R> {
 }
 ----
 
-. Possible implementations for `Function` or` BiFunction` are functions that multiply the given values:
+. Possible implementations for `Function` or `BiFunction` are functions that multiply the given values:
 +
 [source,java,indent=0]
 .{java-package}/builtininterfaces/BuiltInInterfaces_FunctionExample.java
@@ -244,7 +244,7 @@ public interface BinaryOperator<T> extends BiFunction<T,T,T> {
 +
 Note that there is no declared abstract method as it only extends the existing `BiFunction` interface.
 
-. Possible implementations for `UnaryOperator` or` BinaryOperator` are functions that add a fixed number or add one number to another:
+. Possible implementations for `UnaryOperator` or `BinaryOperator` are functions that add a fixed number or add one number to another:
 +
 [source,java,indent=0]
 .{java-package}/builtininterfaces/BuiltInInterfaces_OperatorExample.java

src/org/j6toj8/lambda/functionalinterfaces/FunctionalInterfaces_InterfaceCompilationError.java

@@ -4,14 +4,14 @@ public class FunctionalInterfaces_InterfaceCompilationError {
 
   // tag::code[]
   @FunctionalInterface
-  interface Executavel { // interface funcional
-    void execute(); // método funcional
+  interface Executable { // function interface
+    void execute(); // functional method
   }
 
   @FunctionalInterface
-  interface Aplicacao extends Executavel { // NÃO COMPILA!
-    // não pode ser anotada como funcional, pois possui 2 métodos abstratos
-    void inicie();
+  interface Application extends Executable { // NOT COMPILING!
+    // cannot be annotated as functional as it has 2 abstract methods
+    void init();
   } 
   // end::code[]
 }