add explicit type for main method

Author: xuwei-k

content/guides/2.3/deployment/heroku.md

@@ -79,7 +79,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher {
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)

content/guides/2.3/deployment/standalone.md

@@ -17,7 +17,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher { // this is my entry object as specified in sbt project definition
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)

content/guides/2.4/deployment/heroku.md

@@ -79,7 +79,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher {
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getProperty("http.port") != null) System.getProperty("http.port").toInt else 8080
 
     val server = new Server(port)

content/guides/2.4/deployment/standalone.md

@@ -17,7 +17,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher { // this is my entry object as specified in sbt project definition
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)

content/guides/2.5/deployment/heroku.md

@@ -77,7 +77,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher {
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getProperty("http.port") != null) System.getProperty("http.port").toInt else 8080
 
     val server = new Server(port)

content/guides/2.5/deployment/standalone.md

@@ -15,7 +15,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher { // this is my entry object as specified in sbt project definition
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)

content/guides/2.6/deployment/heroku.md

@@ -70,7 +70,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher {
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getProperty("http.port") != null) System.getProperty("http.port").toInt else 8080
 
     val server = new Server(port)

content/guides/2.6/deployment/standalone.md

@@ -15,7 +15,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher { // this is my entry object as specified in sbt project definition
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)

content/guides/2.7/deployment/heroku.md

@@ -70,7 +70,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher {
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getProperty("http.port") != null) System.getProperty("http.port").toInt else 8080
 
     val server = new Server(port)

content/guides/2.7/deployment/standalone.md

@@ -15,7 +15,7 @@ import org.eclipse.jetty.webapp.WebAppContext
 import org.scalatra.servlet.ScalatraListener
 
 object JettyLauncher { // this is my entry object as specified in sbt project definition
-  def main(args: Array[String]) {
+  def main(args: Array[String]): Unit = {
     val port = if(System.getenv("PORT") != null) System.getenv("PORT").toInt else 8080
 
     val server = new Server(port)