Re-order the target in help

Author: core-man

doc/Makefile

@@ -14,8 +14,8 @@ ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees  $(SPHINXOPTS) .
 help:
 	@echo "Please use \`make <target>' where <target> is one of"
 	@echo "  all        generate the complete webpage"
-	@echo "  html       build the HTML files from the existing rst sources"
 	@echo "  api        generate rst source files of API documentation"
+	@echo "  html       build the HTML files from the existing rst sources"
 	@echo "  server     make a local HTTP server for previewing the built documentation"
 	@echo "  clean      clean up built and generated files"