fix

GenericMappingTools · Mar 15, 2024 · 4cf22f3 · 4cf22f3
1 parent 220dee3
commit 4cf22f3
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pygmt/src/grdvolume.py b/pygmt/src/grdvolume.py
@@ -72,7 +72,8 @@ def grdvolume(
     ret
         Return type depends on ``outfile`` and ``output_type``:
 
-        - None if ``outfile`` is set (output will be stored in file set by ``outfile``)
+        - ``None`` if ``outfile`` is set (output will be stored in file set by
+          ``outfile``)
         - :class:`pandas.DataFrame` or :class:`numpy.ndarray` if ``outfile`` is not set
           (depends on ``output_type``)