Run "go fmt" on all .go files

about_structs.go

@@ -1,24 +1,24 @@
 package go_koans
 
 func aboutStructs() {
-  var bob struct {
-    name string
-    age  int
-  }
-  bob.name = "bob"
-  bob.age = 30
+	var bob struct {
+		name string
+		age  int
+	}
+	bob.name = "bob"
+	bob.age = 30
 
-  assert(bob.name == __string__) // structs are collections of named variables
-  assert(bob.age == __int__)     // each field has both setter and getter behavior
+	assert(bob.name == __string__) // structs are collections of named variables
+	assert(bob.age == __int__)     // each field has both setter and getter behavior
 
-  type person struct {
-    name string
-    age  int
-  }
+	type person struct {
+		name string
+		age  int
+	}
 
-  var john person
-  john.name = "bob"
-  john.age = __int__
+	var john person
+	john.name = "bob"
+	john.age = __int__
 
-  assert(bob == john) // assuredly, bob is certainly not john.. yet
+	assert(bob == john) // assuredly, bob is certainly not john.. yet
 }