setup.md: remove trailing whitespaces

Author: maxim-belkin

setup.md

@@ -1,6 +1,6 @@
 ---
 layout: page
-title: Setup 
+title: Setup
 permalink: /setup/
 ---
 
@@ -109,7 +109,7 @@ wish to use a different browser, open this link: <http://localhost:8888>.
 
 ## Overview of the Jupyter notebook (Optional)
 
-![Example Jupyter Notebook](../fig/00_0_jupyter_notebook_example.jpg)  
+![Example Jupyter Notebook](../fig/00_0_jupyter_notebook_example.jpg)
 *Screenshot of a [Jupyter Notebook on quantum mechanics](https://github.com/jrjohansson/qutip-lectures) by Robert Johansson*
 
 ### How the Jupyter notebook works
@@ -122,26 +122,26 @@ After typing the command `jupyter notebook`, the following happens:
 * The Jupyter Notebook server opens the Jupyter notebook client, also known
   as the notebook user interface, in your default web browser.
 
-  ![Jupyter notebook file browser](../fig/00_1_jupyter_file_browser.png)  
+  ![Jupyter notebook file browser](../fig/00_1_jupyter_file_browser.png)
   *The Jupyter notebook file browser*
 
 * To create a new Python notebook select the "New" dropdown on the upper
   right of the screen.
 
-  ![Jupyter notebook file browser](../fig/00_2_jupyter_new_notebook.png)  
+  ![Jupyter notebook file browser](../fig/00_2_jupyter_new_notebook.png)
   *The Jupyter notebook file browser*
 
 * When you can create a new notebook and type code into the browser, the web
   browser and the Jupyter notebook server communicate with each other.
 
-  ![new Jupyter notebook](../fig/00_3_jupyter_blank_notebook.png)  
+  ![new Jupyter notebook](../fig/00_3_jupyter_blank_notebook.png)
   *A new, blank Jupyter notebook*
 
 * Under the "help" menu, take a quick interactive tour of how to
   use the notebook. Help on Jupyter and key workshop packages is
   available here too.
 
-  ![Jupyter tour and help](../fig/00_4_jupyter_tour_help.png)  
+  ![Jupyter tour and help](../fig/00_4_jupyter_tour_help.png)
   *User interface tour and Help*
 
 * The Jupyter Notebook server does the work and calculations, and the web
@@ -150,26 +150,26 @@ After typing the command `jupyter notebook`, the following happens:
 
 * For example, click in the first cell and type some Python code.
 
-  ![Code cell](../fig/00_5_jupyter_code_before.png)  
+  ![Code cell](../fig/00_5_jupyter_code_before.png)
   *A Code cell*
 
 * This is a **Code** cell (see the cell type dropdown with the word **Code**).
   To run the cell, type Shift-Enter.
 
-  ![Code cell and its output](../fig/00_6_jupyter_code_after.png)  
+  ![Code cell and its output](../fig/00_6_jupyter_code_after.png)
   *A Code cell and its output*
 
 * Let's look at a **Markdown** cell. Markdown is a text manipulation
   language that is readable yet offers additional formatting. Don't forget
   to select **Markdown** from the cell type dropdown. Click in the cell and
   enter the markdown text.
 
-  ![markdown input cell](../fig/00_7_jupyter_markdown_before.png)  
+  ![markdown input cell](../fig/00_7_jupyter_markdown_before.png)
   *A markdown input cell*
 
 * To run the cell, type Shift-Enter.
 
-  ![rendered markdown cell](../fig/00_8_jupyter_markdown_after.png)  
+  ![rendered markdown cell](../fig/00_8_jupyter_markdown_after.png)
   *A rendered markdown cell*