DOC: Restore merge grammer fix

Author: snowman2

rioxarray/merge.py

@@ -243,7 +243,7 @@ def merge_datasets(
     Parameters
     ----------
     datasets: list[xarray.Dataset]
-        List of xarray.Dataset's with all geo attributes.
+        List of multiple xarray.Dataset with all geo attributes.
         The first one is assumed to have the same
         CRS, dtype, dimensions, and data_vars as the others in the array.
     bounds: tuple, optional