[skip ci]fix typo (#895)

Author: Emma-Song

python/arctern/geoseries/geoseries.py

@@ -836,7 +836,7 @@ def difference(self, other):
 
     def symmetric_difference(self, other):
         """
-        For each geometry in the GeoSeries and the corresponding geometry given in ``other``, returns a geometry representing the portions of the two geometries that do not interset.
+        For each geometry in the GeoSeries and the corresponding geometry given in ``other``, returns a geometry representing the portions of the two geometries that do not intersect.
 
         Parameters
         ----------
@@ -1652,7 +1652,7 @@ def intersection(self, other):
 
     def union(self, other):
         """
-        This function returns a geometry being a union of two input geometries.
+        Returns a geometry being a union of two input geometries.
 
         Parameters
         ----------

spark/arctern_spark/geodataframe.py

@@ -483,7 +483,7 @@ def reset_index(self, level=None, drop=False, inplace=False, col_level=0, col_fi
     @classmethod
     def from_file(cls, filename, **kwargs):
         """
-        Constructs a GeoDataFrame from a file or url.
+        Constructs a GeoDataFrame from a file or URL.
 
         Parameters
         -----------