style: format code with Google Java Format

This commit fixes the style issues introduced in 77f1efc according to the output
from Google Java Format.

Details: None

src/main/java/com/github/brenoepics/at4j/util/rest/RestMethod.java

@@ -19,7 +19,7 @@ public enum RestMethod {
   GET, // The GET method requests a representation of the specified resource.
   POST, // The POST method is used to submit an entity to the specified resource.
   PUT, // The PUT method replaces all current representations of the target resource with the
-       // request payload.
+  // request payload.
   DELETE, // The DELETE method deletes the specified resource.
   PATCH // The PATCH method is used to apply partial modifications to a resource.
 }