Fixed minor changes suggested by Checkstyle

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

@@ -25,6 +25,6 @@ package com.iluwatar.acyclicvisitor;
 /**
  * ZoomVisitor interface
  */
-public interface ZoomVisitor extends ModemVisitor{
+public interface ZoomVisitor extends ModemVisitor {
   void visit(Zoom zoom);
 }

retry/src/main/java/com/iluwatar/retry/Retry.java

@@ -105,6 +105,7 @@ public final class Retry<T> implements BusinessOperation<T> {
           //ignore
         }
       }
-    } while (true);
+    }
+    while (true);
   }
 }