Bug fix: correct option of `plot_components.py`

Option should have been updated in commit e35226da.

Overlap/Tests/short_tests.json

@@ -590,7 +590,7 @@
 	    "$src_dir/Overlap/plot_components.py",
 	    "$PWD/EGr2nd15md4np3/edgelist.csv",
 	    "$tests_old_dir/Extraction_eddies_region_2_noise/SHPC_anti",
-	    "--save=png", "--node=347852", "--label=20461"
+	    "--save=png", "--node=347852", "--label_date=20461"
 	]
     },
     {