Move type vs interface

From `Formatting` to `Objects and Data Structures` section.

README.md

@@ -1199,6 +1199,64 @@ interface Config {
 
 **[⬆ back to top](#table-of-contents)**
 
+### type vs. interface
+
+Use type when you might need a union or intersection. Use interface when you want `extends` or `implements`. There is no strict rule however, use the one that works for you.  
+For a more detailed explanation refer to this [answer](https://stackoverflow.com/questions/37233735/typescript-interfaces-vs-types/54101543#54101543) about the differences between `type` and `interface` in TypeScript.
+
+**Bad:**
+
+```ts
+interface EmailConfig {
+  // ...
+}
+
+interface DbConfig {
+  // ...
+}
+
+interface Config {
+  // ...
+}
+
+//...
+
+type Shape {
+  // ...
+}
+```
+
+**Good:**
+
+```ts
+
+type EmailConfig {
+  // ...
+}
+
+type DbConfig {
+  // ...
+}
+
+type Config  = EmailConfig | DbConfig;
+
+// ...
+
+interface Shape {
+  // ...
+}
+
+class Circle implements Shape {
+  // ...
+}
+
+class Square implements Shape {
+  // ...
+}
+```
+
+**[⬆ back to top](#table-of-contents)**
+
 ## Classes
 
 ### Classes should be small
@@ -2450,64 +2508,6 @@ review.review();
 
 **[⬆ back to top](#table-of-contents)**
 
-### type vs. interface
-
-Use type when you might need a union or intersection. Use interface when you want `extends` or `implements`. There is no strict rule however, use the one that works for you.  
-For a more detailed explanation refer to this [answer](https://stackoverflow.com/questions/37233735/typescript-interfaces-vs-types/54101543#54101543) about the differences between `type` and `interface` in TypeScript.
-
-**Bad:**
-
-```ts
-interface EmailConfig {
-  // ...
-}
-
-interface DbConfig {
-  // ...
-}
-
-interface Config {
-  // ...
-}
-
-//...
-
-type Shape {
-  // ...
-}
-```
-
-**Good:**
-
-```ts
-
-type EmailConfig {
-  // ...
-}
-
-type DbConfig {
-  // ...
-}
-
-type Config  = EmailConfig | DbConfig;
-
-// ...
-
-interface Shape {
-  // ...
-}
-
-class Circle implements Shape {
-  // ...
-}
-
-class Square implements Shape {
-  // ...
-}
-```
-
-**[⬆ back to top](#table-of-contents)**
-
 ### Organize imports
 
 With clean and easy to read import statements you can quickly see the dependencies of current code. Make sure you apply following good practices for `import` statements:
@@ -2757,4 +2757,4 @@ function getActiveSubscriptions(): Promise<Subscription[]> {
 }
 ```
 
-**[⬆ back to top](#table-of-contents)**
+**[⬆ back to top](#table-of-contents)**