chore: update docs

docs/classes/CnpjValidator.md

@@ -12,10 +12,18 @@ import io.github.multiform_validator.CnpjValidator;
 
 public class Main {
     public static void main(String[] args) {
+        System.out.println(cnpjIsTrue()); // true
+        System.out.println(cnpjIsFalse()); // false
+    }
+
+    public static boolean cnpjIsTrue() {
         String cnpjTrue = "69.807.668/0001-41";
+        return CnpjValidator.cnpjIsValid(cnpjTrue);
+    }
+
+    public static boolean cnpjIsFalse() {
         String cnpjFalse = "61.807.661/0001-48";
-        System.out.println(CnpjValidator.cnpjIsValid(cnpjTrue)); // true
-        System.out.println(CnpjValidator.cnpjIsValid(cnpjFalse)); // false
+        return CnpjValidator.cnpjIsValid(cnpjFalse);
     }
 }
 ```

docs/classes/CreditCardValidator.md

@@ -12,10 +12,16 @@ import io.github.multiform_validator.CreditCardValidator;
 
 public class Main {
     public static void main(String[] args) {
-        String creditCardTrue = "4532 8770 0040 4166";
-        String creditCardFalse = "4532 8770 0040 4167";
-        System.out.println(CreditCardValidator.isCreditCardValid(creditCardTrue)); // true
-        System.out.println(CreditCardValidator.isCreditCardValid(creditCardFalse)); // false
+        valid();
+        invalid();
+    }
+
+    private static void valid() {
+        System.out.println(CreditCardValidator.isCreditCardValid("4532 8770 0040 4166")); // true
+    }
+
+    private static void invalid() {
+        System.out.println(CreditCardValidator.isCreditCardValid("4532 8770 0040 4167")); // false
     }
 }
 ```

docs/classes/FileValidator.md

@@ -21,28 +21,85 @@ The `FileValidator` class is used to validate files. It has the following method
 
 ## How to use
 
+### isValidAudio
+
 ```java
-import io.github.multiform_validator.FileValidator;
+import static io.github.multiform_validator.FileValidator.isValidAudio;
 
 import java.io.File;
 
 public class Main {
     public static void main(String[] args) {
-        File file = new File("path/to/file");
-        System.out.println(FileValidator.isValidAudio(file)); // true | false
-        System.out.println(FileValidator.isValidImage(file)); // true | false
-        System.out.println(FileValidator.isValidPdf(file)); // true | false
-        System.out.println(FileValidator.isValidTxt(file)); // true | false
-
+        File file = new File("src/main/resources/audio.mp3");
+        System.out.println(isValidAudio(file)); // true | false
+
         exampleExcludingExtensions();
     }
-
+    
     public static void exampleExcludingExtensions() {
-        File file = new File("path/to/file");
+        File file = new File("src/main/resources/audio.mp3");
         String[] audioExtensions = {"mp3"};
+        System.out.println(isValidAudio(file, audioExtensions)); // false
+    }
+}
+```
+
+### isValidImage
+
+```java
+import static io.github.multiform_validator.FileValidator.isValidImage;
+
+import java.io.File;
+
+public class Main {
+    public static void main(String[] args) {
+        File file = new File("src/main/resources/image.png");
+        System.out.println(isValidImage(file)); // true | false
+
+        exampleExcludingExtensions();
+        example2ExcludingExtensions();
+    }
+
+    public static void exampleExcludingExtensions() {
+        File file = new File("src/main/resources/image.png");
         String[] imageExtensions = {"ico", "jpeg", "png"};
-        System.out.println(FileValidator.isValidAudio(file, audioExtensions)); // true | false
-        System.out.println(FileValidator.isValidImage(file, imageExtensions)); // false | true
+        System.out.println(isValidImage(file, imageExtensions)); // false
+    }
+
+    public static void example2ExcludingExtensions() {
+        File file = new File("src/main/resources/image.png");
+        String[] imageExtensions = {"ico", "jpeg"};
+        System.out.println(isValidImage(file, imageExtensions)); // true | false
+    }
+}
+```
+
+### isValidPdf
+
+```java
+import static io.github.multiform_validator.FileValidator.isValidPdf;
+
+import java.io.File;
+
+public class Main {
+    public static void main(String[] args) {
+        File file = new File("src/main/resources/file.pdf");
+        System.out.println(isValidPdf(file)); // true | false
+    }
+}
+```
+
+### isValidTxt
+
+```java
+import static io.github.multiform_validator.FileValidator.isValidTxt;
+
+import java.io.File;
+
+public class Main {
+    public static void main(String[] args) {
+        File file = new File("src/main/resources/file.txt");
+        System.out.println(isValidTxt(file)); // true | false
     }
 }
 ```