docs: update role object (#2961)

role-object/src/main/java/com/iluwatar/roleobject/BorrowerRole.java

@@ -24,21 +24,18 @@
  */
 package com.iluwatar.roleobject;
 
+import lombok.Getter;
+import lombok.Setter;
+
 /**
  * Borrower role.
  */
+@Getter
+@Setter
 public class BorrowerRole extends CustomerRole {
 
   private String name;
 
-  public String getName() {
-    return name;
-  }
-
-  public void setName(String name) {
-    this.name = name;
-  }
-
   public String borrow() {
     return String.format("Borrower %s wants to get some money.", name);
   }

role-object/src/main/java/com/iluwatar/roleobject/InvestorRole.java

@@ -24,31 +24,20 @@
  */
 package com.iluwatar.roleobject;
 
+import lombok.Getter;
+import lombok.Setter;
+
 /**
  * Investor role.
  */
+@Getter
+@Setter
 public class InvestorRole extends CustomerRole {
 
   private String name;
 
   private long amountToInvest;
 
-  public String getName() {
-    return name;
-  }
-
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  public long getAmountToInvest() {
-    return amountToInvest;
-  }
-
-  public void setAmountToInvest(long amountToInvest) {
-    this.amountToInvest = amountToInvest;
-  }
-
   public String invest() {
     return String.format("Investor %s has invested %d dollars", name, amountToInvest);
   }