Modify conf.py and quick-start.rst

Author: mikeqfu

Diff for: docs/source/conf.py

@@ -162,7 +162,7 @@ def __init__(self, **options):
         \Large {{First release:}} \large \textbf{{%s}} \par
         \Large {{Last updated:}} \large \textbf{{\MonthYearFormat\today}} \par
     
-        \vspace{20mm}
+        \vspace{15mm}
         \large \textcopyright \space Copyright %s \par
 
     \end{titlepage}

Diff for: docs/source/quick-start.rst

@@ -975,6 +975,8 @@ Now we are approaching the end of this tutorial. The final task we may want to d
 
 Let's delete the directory **"tests\\osm_data\\"**:
 
+.. code-block:: python
+
     >>> from pyhelpers.dirs import delete_dir
 
     >>> delete_dir(dat_dir, verbose=True)