Update README.md

README.md

@@ -8,7 +8,7 @@
 [![PyPI](https://img.shields.io/badge/License-BSD_2--Clause-green.svg)](https://github.com/emirpasic/gods/blob/master/LICENSE)
 
 
-## Data Structures
+## Data Structures:
 
 - [Containers](#containers)
   - [Lists](#lists)
@@ -56,7 +56,7 @@
 - [Appendix](#appendix)
 
 
-## Containers
+## Containers:
 
 All data structures implement the container interface with the following methods:
 
@@ -103,7 +103,7 @@ Containers are either ordered or unordered. All ordered containers provide [stat
 |   | [PriorityQueue](#priorityqueue)       | yes | yes* | no | index |
 |   |                                       |  | <sub><sup>*reversible</sup></sub> |  | <sub><sup>*bidirectional</sup></sub> |
 
-### Lists
+### Lists:
 
 A list is a data structure that stores values and may have repeated values.
 
@@ -129,7 +129,7 @@ type List interface {
 }
 ```
 
-#### ArrayList
+#### ArrayList:
 
 A [list](#lists) backed by a dynamic array that grows and shrinks implicitly.
 
@@ -166,7 +166,7 @@ func main() {
 }
 ```
 
-#### SinglyLinkedList
+#### SinglyLinkedList:
 
 A [list](#lists) where each element points to the next element in the list.
 
@@ -203,7 +203,7 @@ func main() {
 }
 ```
 
-#### DoublyLinkedList
+#### DoublyLinkedList:
 
 A [list](#lists) where each element points to the next and previous elements in the list.