fix format

Author: NTP-996

syllabus/module/2.1-slides.md

@@ -231,6 +231,7 @@ where
 ## Details - Monomorphization
 
 ```rust
+
 trait Move {
     fn move_to(&self, x: i32, y: i32);
 }
@@ -241,6 +242,7 @@ fn make_move<T: Move>(thing: T, x: i32, y: i32) {
 
 make_move(Snake {}, 1, 1);
 make_move(Grasshopper {}, 3, 3);
+
 ```
 
 ---
@@ -445,22 +447,20 @@ fn concert_ticket_info(ticket: ConcertTicket) {
 
 ## Details – Heterogeneous vector
 
-```rust
-let airline = Ticket { location: AirlineSeat::FirstClass };
-let concert = Ticket { location: ConcertSeat::FrontRow };
-ticket_info(airline);
-ticket_info(concert);
-
-let tickets = vec![airline, concert];
-
-error[E0308]: mismatched types
-  --> src/main.rs:89:33
-   |
-89 |     let tickets = vec![airline, concert];
-   |                                 ^^^^^^^ expected enum `AirlineSeat`, found enum `ConcertSeat`
-   = note: expected type `Ticket<AirlineSeat>`
-              found struct `Ticket<ConcertSeat>`
-```
+    let airline = Ticket { location: AirlineSeat::FirstClass };
+    let concert = Ticket { location: ConcertSeat::FrontRow };
+    ticket_info(airline);
+    ticket_info(concert);
+    
+    let tickets = vec![airline, concert];
+    
+    error[E0308]: mismatched types
+      --> src/main.rs:89:33
+       |
+    89 |     let tickets = vec![airline, concert];
+       |                                 ^^^^^^^ expected enum `AirlineSeat`, found enum `ConcertSeat`
+       = note: expected type `Ticket<AirlineSeat>`
+                  found struct `Ticket<ConcertSeat>`
 
 ---
 

syllabus/module/2.4-slides.md

@@ -64,6 +64,8 @@ match nums.as_slice() {
 }
 ```
 
+---
+
 ## Typestates Patterns
 
 - Leverage type system to encode state changes