Update docs/loading_data.md

Co-authored-by: Liam Pattinson <LiamPattinson@users.noreply.github.com>

Author: JoelLucaAdams

docs/loading_data.md

@@ -91,7 +91,7 @@ import sdf_xarray as sdfxr
 sdfxr.open_mfdataset("tutorial_dataset_1d/*.sdf")
 ```
 
-Alternatively, files can be loaded using <inv:#xarray.open_mfdataset> however when loading in
+Alternatively, files can be loaded using <inv:#xarray.open_mfdataset>. However, when loading in
 all the files we have do some processing of the data so that we can correctly align it along
 the time dimension; This is done via the `preprocess` parameter utilising the
 <project:#sdf_xarray.SDFPreprocess> function.