Fixing typos

Author: Argyro-Sioziou

acyclic-visitor/src/main/java/com/iluwatar/acyclicvisitor/ConfigureForDosVisitor.java

@@ -26,7 +26,7 @@
 import org.slf4j.LoggerFactory;
 
 /**
- * CongigureForDosVisitor class implements both zoom's and  hayes' visit method 
+ * ConfigureForDosVisitor class implements both zoom's and  hayes' visit method 
  * for Dos manufacturer
  */
 public class ConfigureForDosVisitor implements ModemVisitor, HayesVisitor, ZoomVisitor {

acyclic-visitor/src/main/java/com/iluwatar/acyclicvisitor/ConfigureForUnixVisitor.java

@@ -26,7 +26,7 @@
 import org.slf4j.LoggerFactory;
 
 /**
- * CongigureForDosVisitor class implements both zoom's visit method for Unix 
+ * ConfigureForUnixVisitor class implements zoom's visit method for Unix 
  * manufacturer
  */
 public class ConfigureForUnixVisitor implements ModemVisitor, ZoomVisitor {

acyclic-visitor/src/main/java/com/iluwatar/acyclicvisitor/ModemVisitor.java

@@ -23,7 +23,7 @@
 package com.iluwatar.acyclicvisitor;
 
 /**
- * ZoomVisitor interface
+ * ModemVisitor interface
  */
 public interface ModemVisitor {
   // Visitor is a degenerate base class for all visitors.