Move //mojo/services/X/public/... to //mojo/services/X/... (part 3).

mojo/devtools/common/docs/mojo_benchmark.md

 # mojo_benchmark
 
 `mojo_benchmark` allows you to run performance tests for any Mojo application
 that participates in the [tracing
-ecosystem](https://github.com/domokit/mojo/blob/master/mojo/services/tracing/public/interfaces/tracing.mojom)
+ecosystem](https://github.com/domokit/mojo/blob/master/mojo/services/tracing/interfaces/tracing.mojom)
 with no app changes required.
 
 The script reads a list of benchmarks to run from a file, runs each benchmark in
 controlled caching conditions with tracing enabled and performs specified
 measurements on the collected trace data.
 
 ## Defining benchmarks
 
 `mojo_benchmark` runs performance tests defined in a benchmark file. The
 benchmark file is a Python dictionary of the following format:
@@ skipping 49 matching lines @@
   {
     'name': 'My app initialization',
     'app': 'https://my_domain/my_app.mojo',
     'duration': 10,
     'measurements': [
       'time_until/my_app/initialized',
     ],
   },
 ]
 ```