bug #109 Fix make serve with web-server-bundle (sstok)

This PR was merged into the master branch.

Discussion
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Fix `make serve` with web-server-bundle

| Q             | A
| ------------- | ---
| License       | MIT

When renaming the directory structure, this was forgotten.

Commits
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761095a Fix `make serve` with web-server-bundle

Author: fabpot

symfony/framework-bundle/3.3/Makefile

@@ -13,7 +13,7 @@ sf_console:
 
 serve_as_sf: sf_console
 	@test -f $(CONSOLE) && $(CONSOLE)|grep server:start > /dev/null || ${MAKE} serve_as_php
-	@$(CONSOLE) server:start || exit 1
+	@$(CONSOLE) server:start --docroot=public/ || exit 1
 
 	@printf "Quit the server with \033[32;49mbin/console server:stop.\033[39m\n"