Use headings instead of bold text in index.md #238

observer/index.md

@@ -10,28 +10,31 @@ tags:
  - Gang Of Four
 ---
 
-**Also known as:** Dependents, Publish-Subscribe
+## Also known as
+Dependents, Publish-Subscribe
 
-**Intent:** Define a one-to-many dependency between objects so that when one
+## Intent
+Define a one-to-many dependency between objects so that when one
 object changes state, all its dependents are notified and updated
 automatically.
 
 ![alt text](./etc/observer_1.png "Observer")
 
-**Applicability:** Use the Observer pattern in any of the following situations
+## Applicability
+Use the Observer pattern in any of the following situations
 
 * when an abstraction has two aspects, one dependent on the other. Encapsulating these aspects in separate objects lets you vary and reuse them independently
 * when a change to one object requires changing others, and you don't know how many objects need to be changed
 * when an object should be able to notify other objects without making assumptions about who these objects are. In other words, you don't want these objects tightly coupled
 
-**Typical Use Case:**
+## Typical Use Case
 
 * changing in one object leads to a change in other objects
 
-**Real world examples:**
+## Real world examples
 
 * [java.util.Observer](http://docs.oracle.com/javase/8/docs/api/java/util/Observer.html)
 
-**Credits**
+## Credits
 
 * [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)