preempt change in dev-suite readme url

doc/Makefile

@@ -57,7 +57,7 @@ clean:
 
 apirst:
 	SPHINX_APIDOC_OPTIONS=$(SPHINXAPIOPT) $(SPHINXAPI) --separate -o ./api ../pypeit ../pypeit/tests/* ../pypeit/deprecated/* ../pypeit/version.py ../pypeit/compiler_version*
-	wget -O ./include/dev_suite_readme.rst https://raw.githubusercontent.com/pypeit/PypeIt-development-suite/develop/README.rst
+	wget -O ./include/dev_suite_readme.rst https://raw.githubusercontent.com/pypeit/PypeIt-development-suite/master/README.rst
 	python ./scripts/build_datacontainer_datamodels.py
 	python ./scripts/build_dependency_rst.py
 	python ./scripts/build_detector_table.py