Update pygmt/src/earthtide.py

Co-authored-by: Dongdong Tian <seisman.info@gmail.com>

Author: willschlitzer

pygmt/src/earthtide.py

@@ -89,6 +89,6 @@ def earthtide(**kwargs):
         with Session() as lib:
             if (outgrid := kwargs.get("G")) is None:
                 kwargs["G"] = outgrid = tmpfile.name  # output to tmpfile
-            lib.call_module("earthtide", build_arg_string(kwargs))
+            lib.call_module(module="earthtide", args=build_arg_string(kwargs))
 
         return load_dataarray(outgrid) if outgrid == tmpfile.name else None