one last trailing whitespace

README.md

@@ -67,7 +67,7 @@ Furthermore, to clear the `computed_notebooks` folder which was generated by the
 $ cupid-clear
 ```
 
-This will clear the `computed_notebooks` folder which is at the location pointed to by the `run_dir` variable in the `config.yml` file. 
+This will clear the `computed_notebooks` folder which is at the location pointed to by the `run_dir` variable in the `config.yml` file.
 
 ### CUPiD Options