build: use echo command instead of shell comments

Currently, there are a few recipes where comments are indented
and being passed to the shell.

This commit updates these comments to use the echo command instead,
which is the more common approach used in other recipes in the
makefile.

PR-URL: #22293
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>

Makefile

@@ -266,26 +266,26 @@ jstest: build-addons build-addons-napi ## Runs addon tests and JS tests
 .PHONY: test
 # This does not run tests of third-party libraries inside deps.
 test: all ## Runs default tests, linters, and builds docs.
-	# Build the addons before running the tests so the test results
-	# can be displayed together
+	@echo "Build the addons before running the tests so the test results"
+	@echo "can be displayed together"
 	$(MAKE) -s build-addons
 	$(MAKE) -s build-addons-napi
 	$(MAKE) -s cctest
 	$(MAKE) -s jstest
 
 .PHONY: test-only
 test-only: all  ## For a quick test, does not run linter or build docs.
-	# Build the addons before running the tests so the test results
-	# can be displayed together
+	@echo "Build the addons before running the tests so the test results"
+	@echo "can be displayed together"
 	$(MAKE) build-addons
 	$(MAKE) build-addons-napi
 	$(MAKE) cctest
 	$(MAKE) jstest
 
 # Used by `make coverage-test`
 test-cov: all
-	# Build the addons before running the tests so the test results
-	# can be displayed together
+	@echo "Build the addons before running the tests so the test results"
+	@echo "can be displayed together"
 	$(MAKE) build-addons
 	$(MAKE) build-addons-napi
 	# $(MAKE) cctest
@@ -399,7 +399,7 @@ build-addons-napi: | $(NODE_EXE) test/addons-napi/.buildstamp
 
 .PHONY: clear-stalled
 clear-stalled:
-	# Clean up any leftover processes but don't error if found.
+	@echo "Clean up any leftover processes but don't error if found."
 	ps awwx | grep Release/node | grep -v grep | cat
 	@PS_OUT=`ps awwx | grep Release/node | grep -v grep | awk '{print $$1}'`; \
 	if [ "$${PS_OUT}" ]; then \
@@ -437,7 +437,7 @@ test-ci-js: | clear-stalled
 	$(PYTHON) tools/test.py $(PARALLEL_ARGS) -p tap --logfile test.tap \
 		--mode=$(BUILDTYPE_LOWER) --flaky-tests=$(FLAKY_TESTS) \
 		$(TEST_CI_ARGS) $(CI_JS_SUITES)
-	# Clean up any leftover processes, error if found.
+	@echo "Clean up any leftover processes, error if found."
 	ps awwx | grep Release/node | grep -v grep | cat
 	@PS_OUT=`ps awwx | grep Release/node | grep -v grep | awk '{print $$1}'`; \
 	if [ "$${PS_OUT}" ]; then \
@@ -452,7 +452,7 @@ test-ci: | clear-stalled build-addons build-addons-napi doc-only
 	$(PYTHON) tools/test.py $(PARALLEL_ARGS) -p tap --logfile test.tap \
 		--mode=$(BUILDTYPE_LOWER) --flaky-tests=$(FLAKY_TESTS) \
 		$(TEST_CI_ARGS) $(CI_JS_SUITES) $(CI_NATIVE_SUITES) $(CI_DOC)
-	# Clean up any leftover processes, error if found.
+	@echo "Clean up any leftover processes, error if found."
 	ps awwx | grep Release/node | grep -v grep | cat
 	@PS_OUT=`ps awwx | grep Release/node | grep -v grep | awk '{print $$1}'`; \
 	if [ "$${PS_OUT}" ]; then \