docs: explain how to specify classifiers on dependencies (#1775)

docs/modules/ROOT/pages/dependencies.adoc

@@ -58,6 +58,26 @@ $ ./classpath_example.java
 1 [main] INFO classpath_example  - Hello from Java!
 ----
 
+[TIP]
+====
+Dependency classifiers shall be put _after_ the version number:
+
+```java
+//DEPS io.netty:netty-transport-native-kqueue:4.1.107.Final:osx-aarch_64
+```
+
+is the equivalent of the following Maven dependency declaration:
+
+```xml
+<dependency>
+    <groupId>io.netty</groupId>
+    <artifactId>netty-transport-native-kqueue</artifactId>
+    <version>4.1.107.Final</version>
+	<classifier>osx-aarch_64</classifier>
+</dependency>
+```
+====
+
 == Managed dependencies ("BOM POM"'s) [Experimental]
 
 When using libraries and frameworks it can get tedious to mange and update multiple versions.