Fix exercises 058 and 081 :wrench:

exercises/058_quiz7.zig

@@ -191,7 +191,7 @@ const TripItem = union(enum) {
 // The Hermit's Notebook is where all the magic happens. A notebook
 // entry is a Place discovered on the map along with the Path taken to
 // get there and the distance to reach it from the start point. If we
-// find a better Path to reach a Place (lower distance), we update the
+// find a better Path to reach a Place (shorter distance), we update the
 // entry. Entries also serve as a "todo" list which is how we keep
 // track of which paths to explore next.
 const NotebookEntry = struct {

exercises/081_anonymous_structs2.zig

@@ -41,7 +41,7 @@ pub fn main() void {
 fn printCircle(???) void {
     print("x:{} y:{} radius:{}\n", .{
         circle.center_x,
-        circle.centaur_y,
+        circle.center_y,
         circle.radius,
     });
 }