docs: clarify experimental comments in dummy test and speech client

Author: chalmerlowe

packages/google-cloud-speech/google/cloud/speech_v1/services/speech/client.py

@@ -18,7 +18,7 @@
 # we must touch a file in one of those paths to wake it up.
 #
 # This file is GAPIC_AUTO, and this specific file is NOT one of the 5 tracked files (setup.py, etc.)
-# in system.sh, so this change will NOT trigger tests for google-cloud-speech itself.
+# in system.sh, so this change will NOT launch google-cloud-speech's tests.
 #
 # If this ad-hoc testing prototype proves successful, we will update the internal Kokoro
 # JobConfigs to watch 'ci/adhoc/.*' instead, eliminating the need for this workaround.

packages/google-resumable-media/tests/system/requests/test_dummy_failure.py

@@ -16,6 +16,7 @@
 """
 Temporary dummy test to verify ad-hoc testing failure reporting.
 This file is for experimentation/prototyping only and will be removed before merge.
+We are using this to test packages that have legit changes (i.e. they would show up in `package_diff` naturally AND would have failing tests.
 """