small fix

Author: GaOrtiga

server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java

@@ -1173,7 +1173,7 @@ private String validateConfigurationValue(final String name, String value, final
         if (type.equals(Integer.class) && NetworkModel.MACIdentifier.key().equalsIgnoreCase(name)) {
             try {
                 final int val = Integer.parseInt(value);
-                //The value needs to be between 0 to 255 because the mac generation needs a value of 8 bit
+                //The value need to be between 0 to 255 because the mac generation needs a value of 8 bit
                 //0 value is considered as disable.
                 if(val < 0 || val > 255){
                     throw new InvalidParameterValueException(String.format("[%s] value should be between 0 and 255. 0 value will disable this feature.", name));
@@ -1262,7 +1262,7 @@ protected String validateIfIntValueIsInRange(String name, String value, String r
 
 
     private String validateIfStringValueIsInRange(String name, String value, String... range) {
-        List<String> message = new ArrayList<String>();
+        List<String> message = new ArrayList<>();
         String errMessage = "";
         for (String rangeOption : range) {
             switch (rangeOption) {