chore: tidy comment in opaque_src example (#111)

examples/opaque_src/BUILD.bazel

@@ -18,7 +18,7 @@ swc(
     srcs = [":opaque_src"],
 )
 
-# But we can extract the opaque outputs using output_files to make a friendly label for the output .js file
+# But we can extract the opaque outputs using output_files to make a friendly label for the output .js file (used below)
 output_files(
     name = "in.js",
     paths = ["%s/in.js" % package_name()],
@@ -28,7 +28,5 @@ output_files(
 # Assert that the output of "transpile" rule matches the expected file.
 write_source_files(
     name = "test",
-    # This is a pre-declared output of the "transpile" rule, so we can refer to it directly using a Bazel label
-    # even though the file itself is generated by Bazel in ../../bazel-bin/examples/simple/in.js
     files = {"expected.js": ":in.js"},
 )