[php] Fix typo in help output

Author: olleolleolle

Makefile

@@ -12,7 +12,7 @@ acceptance-%: %
 	cd $< && make acceptance
 .PHONY: acceptance-%
 
-clean: $(patsubst %,clean-%,$(languages)) ## Remove all build artifacts and files generated by the acceptance tests  for all supported languages
+clean: $(patsubst %,clean-%,$(languages)) ## Remove all build artifacts and files generated by the acceptance tests for all supported languages
 .PHONY: clean
 
 clean-%: %
@@ -59,4 +59,4 @@ docker-run: ## Start a docker container with all languages and tools installed
 	  --tty \
 	  cucumber/cucumber-build:0.13.0 \
 	  bash
-.PHONY:
+.PHONY: