Fix indent in readme.md

Closes gh-359

readme.md

@@ -8,10 +8,10 @@ Petclinic is a https://spring.io/guides/gs/spring-boot[Spring Boot] application
 
 
 ```
-	git clone https://github.com/spring-projects/spring-petclinic.git
-	cd spring-petclinic
-    ./mvnw package
-    java -jar target/*.jar
+git clone https://github.com/spring-projects/spring-petclinic.git
+cd spring-petclinic
+./mvnw package
+java -jar target/*.jar
 ```
 
 You can then access petclinic here: http://localhost:8080/
@@ -21,7 +21,7 @@ You can then access petclinic here: http://localhost:8080/
 Or you can run it from Maven directly using the Spring Boot Maven plugin. If you do this it will pick up changes that you make in the project immediately (changes to Java source files require a compile as well - most people use an IDE for this):
 
 ```
-	./mvnw spring-boot:run
+./mvnw spring-boot:run
 ```
 
 ## In case you find a bug/suggested improvement for Spring Petclinic