Fix link to slf4j.org
@@ -253,7 +253,7 @@ nc.setClosedCallback( event -> {
```
## Logging
-This library logs error, warning, and debug information using the [Simple Logging Facade for Java (SLF4J)](www.slf4j.org) API.
+This library logs error, warning, and debug information using the [Simple Logging Facade for Java (SLF4J)](http://www.slf4j.org) API.
This gives you, the downstream user, flexibility to choose which (if any) logging implementation you prefer.
### Q: Hey, what the heck is this `Failed to load class org.slf4j.impl.StaticLoggerBinder` exception?".
A: You're getting that message because slf4j can't find an actual logger implementation in your classpath.
