TST: fix namespace in test

Author: bsipocz

astroquery/alma/tests/test_alma_utils.py

@@ -100,7 +100,7 @@ def test_footprint_to_reg_pointing(pointing_footprint_str=pointing_footprint_str
 
 @pytest.mark.skipif(not HAS_REGIONS, reason="regions is required")
 def test_footprint_to_reg_plot(pointing_footprint_str=pointing_footprint_str):
-    reg_output = footprint_to_reg(pointing_footprint_str)
+    reg_output = utils.footprint_to_reg(pointing_footprint_str)
 
     from astropy.wcs import WCS
     ww = WCS(naxis=2)