Minor documentation fixes

Fixes gh-781

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -693,7 +693,7 @@ The following items are output:
 
 [[boot-features-logging-console-output]]
 === Console output
-The default log configuration will echo messages to the console as they written. By
+The default log configuration will echo messages to the console as they are written. By
 default `ERROR`, `WARN` and `INFO` level messages are logged. To also log `DEBUG` level
 messages to the console you can start your application with a `--debug` flag.
 

spring-boot-docs/src/main/asciidoc/using-spring-boot.adoc

@@ -524,7 +524,7 @@ http://maven.apache.org/plugins/maven-idea-plugin/[IDEA]; Gradle offers plugins
 for http://www.gradle.org/docs/current/userguide/ide_support.html[various IDEs].
 
 TIP: If you accidentally run a web application twice you will see a ``Port already in
-use'' error. STS users can use the `Relauch` button rather than `Run` to ensure that
+use'' error. STS users can use the `Relaunch` button rather than `Run` to ensure that
 any existing instance is closed.