Fix API doc

Author: seisman

doc/api/index.rst

@@ -194,24 +194,24 @@ Getting metadata from tabular or grid data:
     info
     grdinfo
 
-Common Parameters
------------------
-
-.. currentmodule:: pygmt.params
+Xarray Integration
+------------------
 
 .. autosummary::
     :toctree: generated
 
-    Box
+    GMTBackendEntrypoint
+    GMTDataArrayAccessor
 
-Xarray Integration
-------------------
+Common Parameters
+-----------------
+
+.. currentmodule:: pygmt.params
 
 .. autosummary::
     :toctree: generated
 
-    GMTBackendEntrypoint
-    GMTDataArrayAccessor
+    Box
 
 Enums
 -----