changed struct name 'class' into 'role'

exercises/037_structs.zig

@@ -22,8 +22,8 @@
 //
 const std = @import("std");
 
-// We'll use an enum to specify the character class.
-const Class = enum {
+// We'll use an enum to specify the character role.
+const Role = enum {
     wizard,
     thief,
     bard,
@@ -33,7 +33,7 @@ const Class = enum {
 // Please add a new property to this struct called "health" and make
 // it a u8 integer type.
 const Character = struct {
-    class: Class,
+    role: Role,
     gold: u32,
     experience: u32,
 };
@@ -41,7 +41,7 @@ const Character = struct {
 pub fn main() void {
     // Please initialize Glorp with 100 health.
     var glorp_the_wise = Character{
-        .class = Class.wizard,
+        .role = Role.wizard,
         .gold = 20,
         .experience = 10,
     };