async-profiler#1268: Documentation should refer to libasyncProfiler.dylib on macOS

Author: apangin

docs/IntegratingAsyncProfiler.md

@@ -9,6 +9,8 @@ it is possible to attach async-profiler as an agent on the command line. For exa
 $ java -agentpath:/path/to/libasyncProfiler.so=start,event=cpu,file=profile.html ...
 ```
 
+On macOS, the library name is `libasyncProfiler.dylib` instead of `libasyncProfiler.so`.
+
 Agent library is configured through the JVMTI argument interface.
 The format of the arguments string is described
 [in the source code](https://github.com/async-profiler/async-profiler/blob/v4.3/src/arguments.cpp#L39).