Merge branch 'chapter_3' of https://github.com/urani-labs/solana-dev-…

…onboarding-rs into chapter_3

chapters/03_anchor.md

@@ -124,6 +124,8 @@ pub struct SetData<'info> {
 
 * Constraints can be added through:
 
+<br>
+
 ```rust
 #[account(<constraints>)]
 pub account: AccountType
@@ -142,6 +144,8 @@ pub account: AccountType
 
 * You can use the `require` macro to simplify writing errors.
 
+<br>
+
 ```rust
 #[program]
 mod hello_anchor {
@@ -162,6 +166,7 @@ pub enum MyError {
 
 <br>
 
+
 ----
 
 ### Hello World
@@ -212,16 +217,11 @@ mod hello_anchor {
 pub struct Initialize {}
 ```
 
-* The way an endpoint is connected to its corresponding Accounts struct is the `ctx` argument in the endpoint.
-
-* The argument is of type `Context` which is generic over an Account struct, i.e., this is where you put the name of your account validation struct (e.g. `Initalize`).
-
-
 <br>
 
-----
+* The way an endpoint is connected to its corresponding Accounts struct is the `ctx` argument in the endpoint.
 
-### Tests
+* The argument is of type `Context` which is generic over an Account struct, i.e., this is where you put the name of your account validation struct (e.g. `Initalize`).
 
 
 <br>