Fix various typos in the code & docs

basic/enricher/src/main/java/org/springframework/integration/samples/enricher/service/UserService.java

@@ -38,7 +38,7 @@ public interface UserService {
 
     /**
      * Retrieves a user based on the provided username that is provided as a Map
-     * entry using the mapkey 'username'. Map object is routed to the
+     * entry using the key 'username'. Map object is routed to the
      * "findUserWithMapChannel" channel.
      */
 	Map<String, Object> findUserWithUsernameInMap(Map<String, Object> userdata);

basic/enricher/src/test/java/org/springframework/integration/samples/enricher/service/UserServiceTest.java

@@ -29,7 +29,7 @@ import org.springframework.integration.samples.enricher.domain.User;
 public class UserServiceTest {
 
 	@Test
-	public void testStartupOfSpringInegrationContext() throws Exception {
+	public void testStartupOfSpringIntegrationContext() throws Exception {
 		final ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
 				"/META-INF/spring/integration/spring-integration-context.xml", UserServiceTest.class);
 		Thread.sleep(2000);