typo fixes

Author: shigemk2

src/main/php/configurators/LoggerConfiguratorDefault.php

@@ -419,7 +419,7 @@ private function configureLogger(Logger $logger, $config) {
 				if (isset($this->appenders[$appenderName])) {
 					$logger->addAppender($this->appenders[$appenderName]);
 				} else {
-					$this->warn("Nonexistnant appender [$appenderName] linked to logger [$loggerName].");
+					$this->warn("Nonexistent appender [$appenderName] linked to logger [$loggerName].");
 				}
 			}
 		}

src/test/php/LoggerConfiguratorTest.php

@@ -225,7 +225,7 @@ public function testInvalidLoggerAddivity() {
 
  	/**
  	 * @expectedException PHPUnit_Framework_Error
- 	 * @expectedExceptionMessage Nonexistnant appender [unknownAppender] linked to logger [myLogger].
+ 	 * @expectedExceptionMessage Nonexistent appender [unknownAppender] linked to logger [myLogger].
  	 */
  	public function testNotExistingLoggerAppendersClass() {
  		Logger::configure(PHPUNIT_CONFIG_DIR . '/loggers/config_not_existing_appenders.xml');